WASHINGTON, April 17 -- US President Donald Trump announced on Thursday that Lebanon and Israel had agreed on a 10-day ceasefire, as optimism grew that the Iran war may be nearing an end. Trump said in a social media post that the ceasefire would start at 5 p.m. EST (2100 GMT), aiming to halt a conflict between Israel and the Iran-aligned Lebanese group Hezbollah that was reignited by the U.S.-Israeli war against Iran. He said he had held "excellent conversations" with Israeli Prime Minister Benjamin Netanyahu and Lebanese President Joseph Aoun. "These two Leaders have agreed that in order to achieve PEACE between their Countries, they will formally begin a 10 Day CEASEFIRE at 5 P.M. EST," he said. "Both sides want to see PEACE, and I believe that will happen, quickly!" Trump said he had directed Vice President JD Vance, Secretary of State Marco Rubio and Chairman of the Joint Chiefs of Staff Dan Caine to work with the two countries to achieve lasting peace. The war with Iran spilt into Lebanon on March 2, when Hezbollah opened fire in support of Tehran, prompting an Israeli offensive in Lebanon 15 months after the last major conflict. European Commission President Ursula von der Leyen welcomed the ceasefire announcement, saying on X: "This is a relief, as this conflict has already claimed far too many lives." Thousands of people have been killed, mostly in Iran and Lebanon, since US-Israeli attacks on Iran began on February 28, triggering Iranian airstrikes on Iran's Gulf neighbours and reigniting the Israel-Hezbollah conflict. Soaring energy costs have rattled investors and policymakers globally since Iran effectively closed the Strait of Hormuz, through which a fifth of the world's oil and gas supply flows. Closure of the strait has caused the worst oil price shock in history and forced the International Monetary Fund to downgrade its outlook for the global economy, warning prolonged conflict could push the world to the brink of recession. But hopes of a deal between Iran and the US have been growing, with a two-week ceasefire in force. A security source said a Pakistani mediator had made a breakthrough on "sticky issues", although Tehran....