USA Today:
"... Complicating matters is a nuclear agreement that the Obama administration, working with a handful of other nations, negotiated with Iran in 2015. Under the deal, Iran agreed not to produce highly enriched uranium or the plutonium for weapons. Trump, however, mocked the agreement as a bad deal and pulled out of it during his first term despite a consensus among nuclear-watchdog experts, such as the International Atomic Energy Agency, that it was working.
Trump’s withdrawal from that pact means “he can't accept the Obama parameters, even though probably whatever deal is going to be made is going to be probably pretty close to that,” Aftandilian said.
Even as it reviews the Trump administration’s proposal to end the war, Iran is expecting a new U.S. attack and believes it could come before the American president leaves for a summit with Chinese President Xi Jinping on May 14-15, said Seyed Mohammad Marandi, a Tehran-based, Iranian-American academic and political analyst. Marandi served as an adviser to Iran’s negotiating team during the 2015 nuclear talks and still has close ties to the Iranian government.