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The conflict in the Middle East has taken a dramatic turn as Yemen's Iran-backed Houthis launched a second wave of attacks on Israel since joining the conflict on Saturday. The Houthis have vowed to continue their military operations in the coming days until Israel "ceases its attacks and aggression".In a significant escalation, two powerful explosions shook northern Tehran early on Sunday, with air defenses operating in the Iranian capital. The blasts occurred around 7:20 am, but it was not immediately clear what was targeted.Meanwhile, the US is reportedly preparing plans for ground operations in Iran, with the Trump administration having already deployed US Marines to the Middle East. The Pentagon is considering weeks of ground operations in Iran, potentially including raids on Kharg Island and coastal sites near the Strait of Hormuz.The entry of the Houthis into the conflict poses a direct threat to the Bab al-Mandab strait at the southern end of the Red Sea, a critical choke point in the supply chain of energy supplies and other trade in and out of the Middle East. A shutdown of the Bab al-Mandab, located between Yemen and the Horn of Africa, would amplify the already grave impact of the war on the global economy and could also reignite a Saudi-Yemen conflict.Exiled Iranian Crown Prince Reza Pahlavi has told one of the US's biggest annual gatherings of conservatives that he is ready to lead a new Iranian government and would call on the country's citizens to rise up when the "right moment arrives".Iran's Revolutionary Guard has threatened to target US universities in the Middle East after saying US-Israeli strikes had deliberately targeted two Iranian universities.

The US and Israel are intensifying their military campaign against Iran, with Senator Marco Rubio stating that the operation is expected to conclude in 'weeks, not months'. The conflict escalated with a surprise strike on 28 February that killed Iran's supreme leader, Ali Khamenei.Despite Iran's defiance and denial of negotiations, the US and Israel continue to target Iran's nuclear facilities and military sites. Israel's defence minister, Israel Katz, warned that attacks against Iran will 'escalate and expand' to additional targets and areas that assist the regime in building and operating weapons against Israeli citizens.The conflict has significant economic implications, with the Strait of Hormuz, a strategic waterway through which a fifth of the world's oil is usually shipped, being a key point of contention. The US has ordered thousands of marines and elite airborne troops to the region, possibly in preparation for a military effort to forcibly reopen the waterway.Iran has threatened to attack Saudi Arabia's Red Sea port of Yanbu and the Fujairah oil complex in the United Arab Emirates if a ground invasion takes place. The US president, Donald Trump, has issued an ultimatum to Iran, demanding that it allow free passage of shipping through the strait by 6 April or face the destruction of its energy plants.The conflict has resulted in significant casualties, with over 1,900 people killed and 20,000 injured in Iran, and 19 people killed in Israel. The humanitarian crisis in Lebanon has worsened, with a fifth of the population displaced and nearly 1,100 people killed.The G7 foreign ministers have reiterated the need for safe and toll-free freedom of navigation in the Strait of Hormuz and called for an immediate cessation of attacks against civilians and civilian infrastructure.

Sri Lanka's government has rejected a request from the United States to land two combat aircraft at Mattala Rajapaksa International Airport in southern Sri Lanka from March 4 to 8. The request was made on February 26, just before the US and Israel launched their military offensive against Iran.President Anura Kumara Dissanayake told Sri Lanka's parliament that the US wanted to bring two warplanes armed with eight antiship missiles from a base in Djibouti. The government turned down the request to maintain Sri Lanka's neutrality in the conflict.The decision comes amid escalating tensions in the Middle East, with Iranian missile and drone attacks sending energy prices soaring and fuelling fears of a widening conflict. The US-Israeli war on Iran has sparked widespread concern globally, with many countries refusing to get directly involved while calling for urgent de-escalation.Sri Lanka's president also cited his country's neutrality in denying the US request, saying that had they accepted the US request, they would have had to do the same for Iran, which had also made a request for three naval vessels to make a goodwill visit to Sri Lanka on the same day.In recent weeks, Sri Lanka's navy rescued 32 Iranian crew off IRIS Dena after it was torpedoed by a US submarine off the country's coast, killing at least 84 people. Days later, Sri Lanka evacuated more than 200 crew members from a second Iranian vessel, IRIS Bushehr, after the ship requested assistance from Colombo.

Iran has started to permit a limited but increasing number of commercial vessels to transit the Strait of Hormuz, as indicated by ship tracking data. On Monday, eight non-Iranian flagged vessels were detected in the strategic waterway. This represents a notable increase, with MarineTraffic recording nine transits on Monday and Sunday, compared to just five over the preceding two days. According to Michelle Wiese Bockmann, an analyst at Windward, the growing number of ships rerouting via Iran's territorial waters suggests that Tehran is granting 'permission-based transits to friendly countries.' The Strait of Hormuz, a critical passage that normally carries about one-fifth of global oil supplies, has seen traffic plummet by more than 95 percent since the onset of the conflict between the US, Israel, and Iran. This drastic reduction has led to a surge in oil prices, which have risen above $100 per barrel, an increase of over 40 percent. Iranian officials have issued mixed messages regarding the strait's status. Iranian Minister of Foreign Affairs Abbas Araghchi stated that the strait was 'open, but closed to our enemies'. Conversely, a spokesperson for the Islamic Revolutionary Guard Corps (IRGC) warned earlier in the month that any ship attempting passage would be set ablaze. The situation has drawn international attention, with US President Donald Trump asserting that Washington does not require other countries' assistance to secure shipping traffic through the strait. Meanwhile, the US military reported dropping bunker buster bombs on 'hardened' Iranian missile sites located near the strait, citing the risk these posed to international shipping.

Six decades ago, pioneering oceanographer and conservationist Sylvia Earle made a remarkable discovery while diving off Chile’s oceanic islands. She found the remains of a baby fur seal, a species endemic to the Juan Fernández archipelago that was believed to have been hunted to extinction in the 19th century. This discovery gave Earle hope that a small population might still exist, and indeed, a year later, a colony of 20 endemic fur seals was confirmed on Robinson Crusoe Island.Today, after decades of conservation efforts, the fur seal population has made an extraordinary recovery. An estimated 200,000 fur seals now inhabit the waters around the islands, returning them to their previous role as key members of the ecosystem. Earle, now 90, who returned to the island to dive in December 2025, described the archipelago as a critical 'Hope Spot' for marine protection.In a significant conservation victory, outgoing Chilean President Gabriel Boric recently signed an agreement to extend protection of 337,000 sq km of waters around Juan Fernández and the nearby Nazca-Desventuradas marine park. Once implemented, this 'no take' zone will extend to almost 1 million sq km, making it the third-largest such marine protected zone in the world. By doing so, Chile would protect more than 50% of its waters, placing it in a rare category alongside countries such as Panama and French Polynesia.The protection prohibits all fishing activities except within 12km of the coast, allowing the community of approximately 1,000 lobster fishers to continue their traditional livelihood. Chile is now out in front globally in ocean protection efforts, according to Earle, as most countries have been slower to commit to such extensive marine conservation.The initiative was driven by the Juan Fernández islanders and conservation NGOs who have advocated for decades to protect the unique ecosystem. The fishers, who witnessed the damage caused by industrial fishing of the orange roughy in the 1990s and 2000s, have practiced stewardship of their fishery. A survey showed 98% of residents supported extended protections, leading the fishers to present a proposal directly to the president.Julio Chamorro Solís, a lobster fisher and president of the local fishing organization, emphasized the importance of the unique ecosystem: 'We know the level of endemism we have and how fragile this ecosystem is. There's a biological treasure here.'However, the future of this expanded protection remains uncertain. The new Chilean government, led by President-elect José Antonio Kast, is currently reviewing environmental laws established by the previous administration. While the Chilean ministry of the environment has stated its intention is not to eliminate protections, conservationists and islanders await confirmation that the marine park extension will proceed as planned.This initiative aligns with global commitments to protect 30% of the world's oceans by 2030, a goal reinforced by the recent implementation of the high seas treaty. The expansion of Chile's marine protected areas represents a significant step toward achieving this ambitious target while safeguarding one of the planet's unique marine ecosystems.