Israel Launches Largest Strike in Lebanon, Threatening Fragile US-Iran Ceasefire A major Israeli military operation in Lebanon has thrown a newly announced ceasefire between the United States and Iran into immediate jeopardy. The strikes, described as Israel's largest coordinated attack in Lebanon since the current conflict began, killed dozens and prompted a stark warning from Tehran that it could abandon the truce [124022]. The ceasefire, intended to reduce regional tensions, was announced just hours before Israeli warplanes struck multiple regions across Lebanon on Thursday. Targets included the southern suburbs of the capital, Beirut, areas in southern Lebanon, and the eastern Bekaa Valley [123847]. The Israeli military stated it targeted the pro-Iranian group Hezbollah, destroying several buildings in Beirut's city center in what its defense minister called a "surprise strike" [124022]. The scale of the assault has created a new crisis, with Iranian officials warning that Tehran could withdraw from the ceasefire agreement [124022]. The deal, a two-week truce centered on the vital Strait of Hormuz, was seen as a fragile but critical diplomatic opportunity to ease tensions in a region critical to global oil supply [123732]. The immediate Israeli strikes have placed that goal in serious danger. The development has prompted urgent diplomatic activity, with Turkey's foreign minister holding phone talks with his Iranian and Qatari counterparts to discuss ways to sustain the fragile pause in hostilities [123836]. International reaction to the ceasefire itself had been cautiously optimistic. Asian nations including Malaysia, Japan, and Australia welcomed the pause, expressing hope it could lead to broader Middle East peace [123614]. Analysts had suggested the agreement could lower the risk of oil supply disruptions, potentially leading to cheaper fuel prices worldwide if it held [123858]. The future of that tentative stability now hinges on the fallout from the attacks in Lebanon and the regional response. Israel Launches Largest Strike in Lebanon, Threatening US-Iran Ceasefire US-Iran Truce Announced; Israel Strikes Lebanon US-Iran Ceasefire: Will Gas Prices Finally Fall? Turkey's Top Diplomat in Urgent Calls to Save US-Iran Ceasefire Truce Tests Tense Waters in Gulf U.S.-Iran Ceasefire: Asia Sees Hope for Broader Middle East Peace

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