US President Donald Trump demanded Iran’s “unconditional surrender” on Friday, a dramatic escalation of his demands a week into the war he launched alongside Israel.He made the remarks just hours after Iran’s president Pezeshkian said unspecified countries had begun mediation efforts in one of the first signals of any diplomatic initiative to end the war. “There will be no deal with Iran except unconditional surrender,” Trump said.Israel pounded Beirut on Friday after ordering an unprecedented evacuation of the entire southern suburbs of the Lebanese capital, a major expansion of the war against Iran it began a week ago alongside the United States. Israel also launched attacks on Iran on Friday.