Washington: Pakistan says that the deal to end the war in Iran is taking immediate effect' after both sides have signed it, but that there will still be a formal signing ceremony on Friday.Pakistani Prime Minister Shehbaz Sharif said leaders of both the US and Iran had signed the agreement and endorsed him as a mediator.He said in a post on X that the deal "shall enter into force with immediate effect and as a first step, Islamic Republic of Iran will instantly reopen the Strait of Hormuz and the United States of America will immediately lift the naval blockade."Sharif said that Pakistan and co-mediator Qatar will still host an official signing ceremony on Friday in Switzerland. His post came shortly after President Donald Trump said he'd signed the agreement during a dinner at the Palace of Versailles.