President Donald Trump’s special envoy Steve Witkoff has said that Trump is “curious” as to why Iran has not yet “capitulated” and agreed ⁠to curb ⁠its nuclear program, as rallies have taken place at universities in the Iranian capital,

Witkoff restated Trump's previous commitment to "zero enrichment" by Tehran in any future deal. "There have been some very hard red lines drawn," he said.

His comments come as the Pentagon warns of the risks of a conflict, including the depletion of air defenses and mass casualties.

Witkoff said that Iran’s uranium enrichment “goes far beyond civilian nuclear purposes,” considering that Donald Trump is exerting pressure on Tehran during the nuclear talks. He added that Iran “may be one week away from producing a nuclear bomb, and we will not allow that,” stressing that it must prove it “will behave properly.”

Trump is curious as to why Iran has not yet "capitulated" and agreed to curb its nuclear programme, as Washington builds up its military capability in the Middle East, Trump's special envoy Steve

US envoy Steve Witkoff said Trump was ’curious’ why Iran hadn’t ’capitulated’ given the multiple warnings the US president has issued over a nuclear deal.

Ellie Cohanim, former State Department deputy special envoy, discusses Iran's political landscape, including student protests and the regime's nuclear ambitions.

Fresh Geneva negotiations suggest Trump’s team believes the Iranian government is making serious proposals