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India's nuclear program has reached a significant milestone with its prototype fast breeder reactor (PFBR) achieving criticality, a self-sustaining nuclear chain reaction. Located in Kalpakkam, Tamil Nadu, the 500 megawatt electrical (MWe) reactor is a major leap forward for India's atomic energy ambitions. The PFBR is only the second commercial fast breeder reactor in the world, following Russia's. This advanced reactor design produces more fissile material than it consumes, using a mix of uranium and plutonium as fuel. The reactor's success is a crucial step towards India's goal of significantly increasing its nuclear energy capacity. Indian Prime Minister Narendra Modi hailed the achievement as 'a proud moment for India' and 'a defining step' in advancing the country's nuclear program. The reactor is designed to enable India to extract greater energy from its limited uranium reserves while paving the way for large-scale deployment of thorium-based reactors. India has more than 25 percent of the world's thorium reserves, which are four times larger than uranium reserves globally. The country's three-stage nuclear program aims to utilize thorium as a primary fuel source in the third stage, with the PFBR serving as a critical component in this process. Experts highlight that the PFBR's success could inspire other countries to adopt similar technology, but challenges remain, including high costs and technical complexities. The reactor's electricity generation is expected to be more expensive than alternatives, including solar energy. Despite these challenges, India's achievement marks a significant advancement in nuclear technology and energy security, particularly for a country with growing energy demands and a desire to reduce dependence on fossil fuels.

The White House has firmly denied that it has any plans to use nuclear weapons against Iran, amid escalating tensions and a looming deadline imposed by President Donald Trump. Trump has warned that if Iran does not capitulate to his demands, a 'whole civilisation will die tonight'.The denial from Washington came as Trump employed apocalyptic language, insisting that Iran must make a deal or face a massive onslaught. The original ultimatum was made by Trump on Saturday, demanding that Iran open the Strait of Hormuz, through which about a fifth of global energy exports pass, or face an assault on key infrastructure.The deadline falls at 8pm Eastern time (00:00 GMT), and legal experts warn that targeting civilian infrastructure could amount to a war crime. Texas Democratic Congressman Joaquin Castro called on Trump to immediately clarify that he is not considering using nuclear weapons.Vice President JD Vance later stated that US forces could employ tools they 'so far haven't decided to use', sparking concerns. The Iranian response has been defiant, with the Islamic Revolutionary Guards Corps (IRGC) vowing to respond in kind if the US attacks civilian facilities.Iran has proposed a 10-point peace plan to end the war, which Trump called a 'significant step' but 'not good enough'. The situation remains volatile, with Israel-US strikes on Iran and Iranian attacks across the region and Israel intensifying.

Iranian officials have urged young people to form human chains around the country's power plants, as tensions escalate with the US and Israel. The call to action comes as US President Donald Trump threatens massive strikes on civilian infrastructure if Iran doesn't reopen the Strait of Hormuz.Iranian media showed people gathering outside electricity stations, waving Iranian flags and holding up banners. In Dezful, people gathered on a 1,700-year-old bridge. The country's president, Masoud Pezeshkian, said 14 million people had signed up to fight for their country and declared their readiness to sacrifice their lives in defence of Iran.The US and Israel carried out waves of preparatory strikes that appeared to knock off course the chances of a last-minute ceasefire deal before Trump's 8pm ET (1am BST) deadline for Iran to reopen the strait. Attacks on civilian infrastructure amount to war crimes, legal experts say.Alireza Rahimi, identified by Iranian state television as the secretary of the Supreme Council of Youth and Adolescents, issued a video message calling on young people to form human chains around power plants. He asked them to gather on Tuesday at 2pm around the power plants, which he described as national assets and capital.Iran has formed human-chain demonstrations, also known as human shields, in the past around its nuclear sites at times of heightened tensions with the west. A man in Tehran said his household had collected basic necessities and equipment to charge their mobile phones, in preparation to flee the capital if necessary.The indirect negotiations between the US and Iran are continuing, largely by passing messages through Pakistan. However, the intermediaries said they feared that Israel was bombing the chances of reaching an agreement.

President Donald Trump issued an unprecedented ultimatum on Tuesday, stating that if Iran does not reopen the Strait of Hormuz by 8 p.m. ET, he will "completely annihilate the entirety of Iranian civilization." The threat, posted on his Truth Social platform, was accompanied by language suggesting a total regime change and a benediction to the Iranian people. Democratic officials reacted with alarm. Senator Patty Murray called the post "the rantings of a bloodthirsty lunatic," while Senator Chris Coons labeled it "a threat to commit a war crime." Representative Joaquin Castro warned that the rhetoric implied either a nuclear option or an attempt to convince Tehran of such a possibility, and Rep. Bonnie Watson Coleman urged invoking the 25th Amendment to remove the president from office. Legal scholars highlighted that the United States and Iran are parties to the Fourth Geneva Convention, which bans collective punishment of civilian populations, and to Additional Protocol I, which prohibits attacks on essential civilian infrastructure. Although the U.S. has not ratified the protocol, a 2024 Biden‑era statement affirmed that its core principles are binding as customary international law. During a chaotic White House press conference, Trump reiterated that "the entire country could be taken out in one night" if Iran failed to meet the deadline, and dismissed concerns about civilian casualties by claiming Iranian civilians themselves were urging continued bombing. When pressed about violations of the Geneva Conventions, he did not dispute the legal point but responded, "I hope I don’t have to do it." The Iranian Islamic Revolutionary Guard Corps responded that the strait "will never return to its previous state" for the United States and its allies, underscoring the escalating rhetoric on both sides. Amid the diplomatic flare‑up, the administration also submitted a $1.5 trillion Pentagon budget request, featuring sweeping cuts to domestic programs, further intensifying scrutiny of the president’s foreign‑policy priorities. Critics note contradictions in Trump’s stance: weeks earlier he claimed the U.S. had no strategic need for Hormuz, yet now the strait’s reopening is the centerpiece of his ultimatum. He simultaneously declared the war "won" while threatening its most destructive phase. With Democrats urging constitutional remedies and international law experts warning of potential war‑crime violations, the situation places U.S. foreign policy and domestic governance under unprecedented pressure.

The Guardian’s latest coverage highlights that a deadline imposed by former President Donald Trump on Iran is once more drawing near. This development underscores the persistent diplomatic pressure surrounding Iran’s nuclear program and the broader U.S.–Iran relationship. While details of the specific terms remain limited, the looming deadline signals continued uncertainty in the region’s security landscape.

Donald Trump has reiterated his threat to 'take out' Iran, a statement that has sparked concerns about potential conflict between the United States and Iran. This is not the first time Trump has made such a statement, and it comes at a time when tensions between the two countries remain high.The comments were made during a recent press conference at the White House, where Trump was seen miming shooting a rifle. The gesture has been interpreted as a show of aggression towards Iran. The relationship between the US and Iran has been strained for years, with disagreements over issues such as nuclear policy and military presence in the region.Iran has long been a point of contention for Trump, who has previously criticized the Iran nuclear deal and imposed sanctions on the country. The latest comments are likely to exacerbate concerns about a potential conflict between the two nations.

Israel’s military issued a stark advisory to Iranians early Tuesday, urging them to avoid all train travel across the country from 8:50 am to 9:00 pm Iran time. The warning, posted in Farsi on social media, warned that anyone near railway lines or stations could become a target as Israel prepared to strike infrastructure. The advisory comes just hours before the U.S. President Donald Trump’s ultimatum expires at 8 pm ET on Tuesday (1 am GMT Wednesday). Trump has repeatedly threatened to “take out” Iran’s bridges and power plants in a single night, a claim he reiterated at a White House press briefing on Monday. Iran rejected a cease‑fire proposal brokered by Pakistan, Egypt and Turkey, insisting on a permanent end to the war and presenting a 10‑point counter‑proposal that the U.S. deemed insufficient. Legal experts have warned that indiscriminate bombing of civilian infrastructure could constitute a war crime, a concern dismissed by the Trump administration. On the diplomatic front, Iranian President Masoud Pezeshkian posted on X that over 14 million Iranians are prepared to sacrifice their lives for the nation, underscoring the high domestic stakes. U.S. Secretary of Defense Pete Hegseth warned that Monday would see the “largest volume of strikes” on Iran, with Tuesday expected to see even more attacks as the deadline approached. According to Iranian media, Israel struck Khorramabad airport in western Iran, while Israeli forces also hit a petrochemical plant in Shiraz and a ballistic‑missile launch site in the northwest. The United States reportedly deployed B‑2 stealth bombers that dropped 30,000‑lb GBU‑57 “bunker buster” bombs on an IRGC compound in Tehran, the same munitions used in the June attack on the Fordow nuclear site. Israeli Prime Minister Benjamin Netanyahu told his security cabinet that the war with Hezbollah in Lebanon would continue independently of the U.S.–Iran negotiations, describing a “separation of theatres.” In a related development, a missile strike hit a petrochemical complex in Saudi Arabia’s eastern city of Jubail, forcing an evacuation of workers. Israel reported multiple missile impacts in the Tel Aviv area, claiming Iran launched ballistic missiles equipped with cluster warheads, though no casualties were confirmed. Amid the heightened tension, Brent crude rose marginally to just above $110 a barrel in morning trading, reflecting market anxiety over potential disruptions to Middle‑East oil supplies.

Pakistan has put forward a two-phase plan to bring an end to the ongoing conflict between the US, Israel, and Iran, and to reopen the strategically critical Strait of Hormuz. This initiative has been shared with both Iran and the United States, and is currently being considered by both sides.According to sources, Esmaeil Baghaei, spokesman for Iran's Ministry of Foreign Affairs, has acknowledged Pakistan's diplomatic efforts. The plan, tentatively referred to as the 'Islamabad Accord', involves an immediate ceasefire and the reopening of the Strait of Hormuz, with 15 to 20 days allocated to finalize a broader settlement.The proposed agreement would include Iranian commitments not to pursue nuclear weapons in exchange for sanctions relief and the release of frozen assets. However, Tehran has responded by stating that it will not reopen the strait as part of a temporary ceasefire, and has expressed skepticism about the proposal.The US has not yet responded to Pakistan's plan, while Iran has rejected a 15-point plan put forward by the US last month, describing it as 'illogical'. The conflict has resulted in significant human suffering, with over 2,000 people killed in Iran since the war began on February 28.The situation remains volatile, with Trump threatening 'hell' on Tehran if a deal is not reached by the end of Tuesday. The international community is closely watching the developments, as the Strait of Hormuz remains a critical artery for global fuel supplies, with over 20 percent of the world's oil and gas passing through the waterway.

The Bushehr nuclear power plant in Iran has been under attack, sparking fears about the country's nuclear program and regional security. The plant, which is Iran's only operational nuclear power facility, has been targeted in a series of incidents, although the exact nature and extent of the damage are not yet clear.The attacks on the Bushehr plant come at a time of heightened tensions in the Middle East, with Iran's nuclear program being a major point of contention. The country's nuclear program has been the subject of international scrutiny and concern, with many countries calling for Iran to scale back its activities.The Bushehr plant, which was completed with the help of Russian engineers, has been operational since 2011 and provides a small but significant amount of electricity to the Iranian grid. Any disruption to the plant's operations could have significant implications for the country's energy supply and economy.