We are witnessing Trump's extreme version of maximum pressure diplomacy in real-time

This is the highest stakes diplomacy via social media.  The American president just posted on his Truth Social platform: "We know exactly where the so-called 'Supreme Leader' is hiding.

"He is an easy target, but is safe there - We are not going to take him out (kill!), at least not for now. But we don't want missiles shot at civilians, or American soldiers.

"Our patience is wearing thin. Thank you for your attention to this matter!" Israel-Iran live: Trump says US knows where Iran's supreme leader is 'hiding' It was followed minutes later by "UNCONDITIONAL SURRENDER!" In real-time, we are witnessing Donald Trump's extreme version of maximum pressure diplomacy.

He'd probably call it the 'art of the deal', but bunker busters are the tool, and it comes with such huge consequences, intended and unintended, known and unknown. Read more:The bunker buster bomb which could destroy Iran's nuclear ambitions There is intentional ambiguity in the president's messaging.

His assumption is that he can apply his 'art of the deal' strategy to a deeply ideological geopolitical challenge. It's all playing out publicly.

Overnight, the New York Times, via two of its best-sourced reporters, had been told that Mr Trump is weighing whether to use B-2 aircraft to drop bunker-busting bombs on Iran's underground nuclear facilities. Meanwhile, Axios was reporting that a meeting is possible between Trump's envoy Steve Witkoff and Iran's foreign minister Abbas Araghchi.

The reporting came just as Mr Trump warned "everyone in Tehran to evacuate". The nuclear sites being threatened with bunker busters are not in Tehran, but Trump's words are designed to stoke tension, to confuse and to apply intense pressure.

His actions are too. He left the G7 in Canada early and asked his teams to gather in the White House Situation Room.

This is a game of smoke, mirrors, brinkmanship and - maybe - bluff. In Tehran, what's left of the leadership is watching and reading closely as they consider what's next.

Maybe the Supreme Leader and his regime's days are numbered. Things remain very unpredictable.

From history, though, regime change, even when it comes with a plan - and there is certainly not one here, spells civil war and from that comes a refugee crisis. These are truly tense and chaotic times..