Amid threats to bomb civilian infrastructure, the president said he had received a 10-point proposal from Iran that formed a “workable basis” for continued negotiations.

A diplomatic effort is underway to avoid a major escalation in the Iran war. Hanging over the effort is Mr. Trump's profanity-laced threat to destroy Iran's power plants and other civilian infrastructure if Tehran doesn't agree to a deal to reopen the Strait of Hormuz by Tuesday evening.

President Donald Trump says he’s pulling back on his threats to widen attacks in Iran to include an array of bridges, power plants and other civilian targets, subject to Iran agreeing to a two week ceasefire and reopening of the Strait of Hormuz.

Pakistan had proposed the ceasefire after the US president warned that "a whole civilisation will die tonight" if Iran did not make a deal.

The world is watching and waiting ahead of President Trump's fast-approaching deadline in the war with Iran. CBS News New York's Allen Devlin reports.

On Monday, US President Donald Trump threatened to take out Iran "in one night" if it failed to make a deal reopen the Strait of Hormuz by 20:00EDT (01:00GMT) on Tuesday. But even before his latest threat some countries had already secured deals with Tehran for their vessels to use the key shipping route.

President Donald Trump on Monday expanded his threat against Iran to include all power plants and bridges as his ultimatum to make a deal ticked closer, after Tehran rejected a 45-day ceasefire proposal and said it wants a permanent end to the war.

President Trump posted an explicit, threatening message to Iran on social media on Sunday over the Strait of Hormuz. Meanwhile, Mr. Trump is set to hold a briefing Monday afternoon on the successful search-and-rescue mission for a missing crew member after Iran downed F15-E fighter jet.