1 June 2026 Current Affairs (With PDF)

We bring you the most relevant and important news updates from around the world and India, specially curated for competitive exams and different entrance exams. Today's Current Affairs cover all significant national and international headlines, legal updates, economic news, and environmental highlights to boost your preparation. With our crisp, to-the-point coverage, you can confidently tackle current affairs questions in your exams.

Building a Quantum-Safe Digital Ecosystem in India

Why in News?

The Department of Science and Technology (DST) has released a report outlining a roadmap for establishing a quantum-safe digital ecosystem in India, highlighting the risks posed by future quantum computers to existing cryptographic systems and recommending a phased transition to quantum-resistant security technologies.

Background: The Quantum Threat

1. Current Digital Security Framework

• India's critical digital infrastructure largely relies Public Key Infrastructure (PKI)

• Forms the backbone of secure digital communication.
• Widely used in Banking systems, E-governance platforms, Defence communications, Digital signatures, Secure online transactions.

2. Asymmetric Cryptography

• Uses a pair of keys: Public Key (for encryption) and Private Key (for decryption).

3. Present Security Assumption

• The security of these systems depends on the computational difficulty of solving mathematical problems such as Integer factorisation and Discrete logarithms.

Emerging Risk from Quantum Computing

1. Shor’s Algorithm

• Developed by Peter Shor

2. Significance

• A sufficiently powerful quantum computer can use Shor’s Algorithm to solve factorisation and discrete logarithm problems exponentially faster than classical computers.

3. Implications

• This could render many existing encryption systems ineffective, exposing Banking networks, Defence infrastructure, Government databases, Digital identity systems, Financial transactions.

What is Q-Day?

Definition

• Q-Day refers to the hypothetical future point when quantum computers become powerful enough to break currently deployed public-key cryptographic systems.

Potential Consequences

• Decryption of sensitive communications.
• Compromise of national security networks.
• Exposure of financial and citizen data.
• Vulnerability of critical infrastructure systems.

Key Recommendations of the DST Report

1. Adoption of Quantum-Resistant Technologies

• The report recommends a time-bound migration strategy involving Post-Quantum Cryptography (PQC) and Quantum Key Distribution (QKD)
• These technologies are proposed as complementary approaches to securing India's future digital ecosystem.

2. Critical Information Infrastructure

• Complete migration to PQC by 2029.
• Includes sectors such as Defence, Energy, Telecommunications, Banking, Transportation, Strategic government systems.

3. Other Enterprises

• Complete migration by 2033.
• Objective: Ensure nationwide adoption of quantum-resistant cybersecurity standards.

Post-Quantum Cryptography (PQC)

1. What is PQC?

• A software-based cryptographic framework designed to remain secure against attacks from both classical and quantum computers.

2. Working Principle

• Relies on complex mathematical problems believed to be resistant to quantum attacks.

3. Key Characteristics

• Software-Based Solution can be implemented through software upgrades.
• Requires minimal changes to existing digital infrastructure.

4. Scalability

• Suitable for widespread deployment across Banking, Telecommunications, E-governance, Commercial networks.

5. Advantages

• Cost-effective deploymentC, ompatible with existing internet infrastructure, Easier large-scale adoption.

6. Limitation

• Security depends on the continued hardness of underlying mathematical problems.
• Future mathematical breakthroughs could potentially weaken some algorithms.

Quantum Key Distribution (QKD)

1. What is QKD?

• A hardware-based secure communication technology that uses principles of quantum mechanics to exchange encryption keys.

2. Working Principle

• Uses quantum states of photons to securely transmit cryptographic keys.

3. Security Feature

• Any attempt to intercept or observe the transmitted key alters the quantum state, immediately revealing the intrusion.

Key Characteristics

1. Hardware-Driven System

• Requires Quantum communication devices, Dedicated fibre-optic infrastructure, Satellite-based quantum communication links.

2. Applications

• Military communications,
• Strategic command systems,
• National security networks,
• Critical government communications.

3. Advantages

• Extremely high level of security.
• Intrusion detection is built into the communication process.

4. Limitations

• High Deployment Cost: Requires specialised infrastructure and equipment.
• Distance Constraints: Quantum signals experience transmission limitations over long distances.

Evidence of Subsurface Ice Near the Moon’s South Pole

Why in News?

Scientists from the Physical Research Laboratory (PRL) have identified strong indications of subsurface water ice in the Moon’s south polar region using data collected by the Dual Frequency Synthetic Aperture Radar (DFSAR) onboard Chandrayaan-2.
The findings enhance our understanding of lunar water resources and strengthen the scientific importance of the Moon’s polar regions for future exploration missions.

About the Study

The research concentrated on doubly shadowed craters, which are:

• Small craters located inside larger Permanently Shadowed Regions (PSRs).
• Areas that receive little or no sunlight throughout the lunar year.
• Extremely cold environments capable of preserving water ice for billions of years.

Key Study Site

• Faustini Crater

This crater is among the most significant permanently shadowed regions near the lunar south pole.

Major Findings

1. Strong Indicators of Subsurface Ice

• Researchers identified radar signatures suggesting the possible presence of ice beneath the lunar surface.

2. Diagnostic Indicators

• The study found that Circular Polarization Ratio (CPR) > 1, and Degree of Polarization (DOP) < 0.13 may serve as reliable indicators of subsurface water ice deposits.

3. Significance

• The combined use of CPR and DOP measurements helps distinguish genuine ice deposits from radar reflections caused by rough rocky surfaces.

Discovery Within Faustini Crater

1. Key Observation

• A crater approximately 1.1 km wide located within Faustini crater exhibited strong radar evidence consistent with subsurface ice.

2. Geological Evidence

• Researchers also observed Lobate-rim morphology around the impact feature.

3. Implication

• This suggests that the impacting object may have penetrated an underlying ice-rich layer, exposing signatures of buried ice deposits.

Understanding the Scientific Parameters

1. What It Measures

• Circular Polarization Ratio is a radar parameter used to analyse the way radar waves are reflected from planetary surfaces.

2. Importance

• High CPR values can indicate the presence of Water ice, Rough rocky surfaces, Blocky ejecta materials.

3. Limitation

• CPR alone cannot conclusively confirm ice because rough terrain can produce similar radar signatures.

Degree of Polarization (DOP)

• DOP is a radar polarimetric parameter that measures how much of the reflected radar signal retains its original polarization after interacting with surface or subsurface materials.

Significance

• Differentiate ice deposits from rocky terrain.
• Improve confidence in interpreting radar observations.

Interpretation

• Lower DOP values are generally associated with subsurface ice-rich materials.
• Higher values often indicate rocky or rough surfaces.

Importance of Lunar Polar Ice

1. Drinking Water

• Sustaining astronauts during long-duration missions.

2. Oxygen Production

• Through electrolysis of water.

3. Rocket Fuel

• Hydrogen and oxygen extracted from water can be used as propellants.

About Chandrayaan-2

1. Launch

• Launched by Indian Space Research Organisation in July 2019.

2. Mission Components

• Orbiter, Vikram Lander, Pragyan Rover

3. Mission Outcome

• Communication with the Vikram Lander was lost during the landing attempt in September 2019.

4. Orbiter

• Continues to function successfully.
• All scientific payloads remain operational and continue generating valuable lunar data.

Dual Frequency Synthetic Aperture Radar (DFSAR)

About DFSAR

• DFSAR is one of the eight scientific instruments onboard the Chandrayaan-2 orbiter.

Key Features

• Operates at two radar frequencies.
• Capable of probing beneath the lunar surface.
• Designed specifically to investigate Polar regions, Permanently shadowed craters, Potential water ice deposits.

Importance

• DFSAR has become one of the most significant instruments for studying lunar polar water resources.

Why the Lunar South Pole Matters

The lunar south pole has emerged as a prime target for global space exploration because of:

• Extensive permanently shadowed regions.
• Potential water ice reserves.
• Relatively stable temperatures in some elevated areas.
• Prospects for establishing future lunar bases.

Major space agencies, including NASA, European Space Agency, and Indian Space Research Organisation, consider the region crucial for future human and robotic missions.

India–Singapore 16th Defence Policy Dialogue

Why in News?

India and Singapore convened the 16th Defence Policy Dialogue (DPD) in Singapore to review ongoing defence cooperation, strengthen strategic engagement, and advance bilateral military collaboration across multiple domains.

Overview of India–Singapore Relations

1. Comprehensive Strategic Partnership (CSP)

• During the official visit of Narendra Modi in 2024, India and Singapore elevated their relationship to a Comprehensive Strategic Partnership (CSP).
• The partnership broadens cooperation across Defence and security, Trade and investment, Digital connectivity, Maritime cooperation, Skill development, Emerging technologies.

2. Economic and Trade Relations

• Singapore is India's 6th-largest trading partner globally.
• It is India's largest trading partner within ASEAN.
• Annual trade exceeds US$ 35 billion.

3. Direct Investment

• Singapore remains the leading source of foreign investment into India.
• Accounts for nearly 25% of cumulative FDI inflows into India.

4. Digital Cooperation

• The integration of Unified Payments Interface (India) and PayNow has enabled seamless cross-border real-time digital payments.

5. Military Cooperation

• The Indian Navy enjoys access to Changi Naval Base

6. Training Access

• Singapore is the only foreign country permitted to Station military assets in India.

7. Major Bilateral Military Exercises

• Naval: Singapore-India Maritime Bilateral Exercise (SIMBEX)
• Army: Agni Warrior, Bold Kurukshetra

8. Maritime Security Cooperation

• India and Singapore collaborate closely to secure Strait of Malacca

9. Skill Development Partnership

• National Centre of Excellence for Skilling Initiative: An agreement has been signed to establish the National Centre of Excellence for Skilling in Advanced Manufacturing (Chennai, India)

10. Cultural Significance

• Tamil is recognised as one of Singapore's four official languages alongside English, Mandarin, Malay.

Strategic Importance of Singapore for India

1. Gateway to Southeast Asia

• Serves as India's economic and strategic bridge to ASEAN.

2. Maritime Significance

• Located near critical Indo-Pacific shipping routes.

3. Defence Cooperation

• Facilitates India's engagement in the broader Indo-Pacific security architecture.

4. Economic Connectivity

• Major source of investment, trade, and financial services.

5. Support for Act East Policy

• Plays a central role in advancing India's engagement with Southeast Asia.

WMO Report on Global Temperatures (2026–2030)

Why in News?

The World Meteorological Organization has released a new assessment projecting that global temperatures are likely to remain at record or near-record levels between 2026 and 2030, highlighting the growing urgency of climate action and adaptation measures worldwide.

About the World Meteorological Organization (WMO)

• A specialized agency of the United Nations.
• Established in 1950.
• Headquarters located in Geneva.

Key Findings of the WMO Report

1. Persistent Global Warming Trend

• Global annual near-surface temperatures are projected to remain 1.3°C–1.9°C above pre-industrial levels during 2026–2030.
• This indicates the continued influence of long-term anthropogenic climate change.

2. Rising Probability of Crossing the 1.5°C Threshold

• There is a 91% probability that at least one year during 2026–2030 will temporarily exceed 1.5°C above pre-industrial levels.

3. Potential for New Temperature Records

• At least one year within the forecast period could surpass 2024, currently among the hottest years on record, and become the warmest year ever observed globally.

4. Arctic Warming: A Major Concern

• Arctic winter temperatures are expected to increase approximately 3.5 times faster than the global average.
• Consequences: Accelerated melting of sea ice, Thawing permafrost, Rising sea levels, Disruption of Arctic ecosystems and weather patterns.

5. Drivers of Future Warming

• Carbon dioxide (CO₂), Methane (CH₄), Nitrous oxide (N₂O) remain the dominant factor behind long-term global warming.

6. Influence of El Niño

• The expected development of El Niño conditions by late 2026 may further elevate global temperatures.
• Effects: Increased global average temperatures, Altered rainfall patterns, More frequent weather extremes.

Ports of the Future Partnership: Quad’s First Joint Infrastructure Project in Fiji

Why in News?

Quad nations—United States, Australia, India, and Japan—have announced their first-ever joint infrastructure initiative under the Ports of the Future Partnership, aimed at enhancing port infrastructure and maritime connectivity in Fiji.

About Fiji

• Fiji is an island nation located in the South Pacific Ocean, approximately 2,100 km north of New Zealand, Northeast of Australia, Southwest of Hawaii
• It forms an important part of Oceania’s Pacific island region.
• Suva serves as the political, economic, and administrative capital of Fiji.
• Soft Coral Capital of the World
• 180th meridian (International Date Line region) passes through Taveuni

Significance of the Quad Port Initiative in Fiji

1. Strategic Connectivity

• Strengthens maritime infrastructure in the Pacific Islands region.
• Enhances regional trade and logistics capabilities.

2. Indo-Pacific Engagement

• Reinforces the Quad's commitment to a free, open, and resilient Indo-Pacific.
• Expands developmental cooperation beyond security initiatives.

3. Support for Pacific Island Countries

• Addresses infrastructure gaps.
• Promotes sustainable economic development.
• Improves regional connectivity and resilience.

4. India's Pacific Outreach

• Deepens India's engagement with Pacific Island nations.
• Strengthens people-to-people ties through the large Indo-Fijian community.

Mission Queen Pineapple

Why in News?

Central Government, in partnership with the Government of Tripura, has launched Mission Queen Pineapple to transform the state's GI-tagged Queen Pineapple into a globally recognized premium fruit brand and strengthen its export potential.

What is Mission Queen Pineapple?

• Mission Queen Pineapple is a dedicated initiative aimed at developing a comprehensive farm-to-global-market value chain for Tripura's renowned Queen Pineapple.
• Implementation Period: FY 2026–FY 2028
• Mission Duration: Three Years
• Core Objective: To enhance Production quality, Value addition, Branding and marketing, Export competitiveness, Farmer incomes and livelihood opportunities.

About Queen Pineapple

• Scientific Name: Ananas comosus
• Queen Pineapple has been officially designated as the State Fruit of Tripura due to its distinctive qualities and economic importance.
• Received the Geographical Indication (GI) Tag in 2015.

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