US President Donald Trump said Friday he was "not satisfied" with a new Iranian negotiating proposal, as peace talks remain frozen despite a weeks-long ceasefire.

Iran delivered the draft to mediator Pakistan on Thursday evening, the IRNA news agency reported, without detailing its contents.

"At this moment I'm not satisfied with what they're offering," Trump told reporters, blaming stalled talks on "tremendous discord" within Iran's leadership.

"Do we want to go and just blast the hell out of them and finish them forever -- or do we want to try and make a deal?" he added, saying he would "prefer not" to take the first option "on a human basis."