Trump: The US does not necessarily need regime change in Iran to stop its nuclear weapons Trump said the main problem is to identify who in Iran to negotiate with, and that Iran wants an agreement. He said the US had not delivered a "knockout blow" because Iran wanted to negotiate, but it might be necessary to end the matter militarily at some point. He also said that he does not want the current war to turn into a long-term conflict like the Vietnam War, and that Iran is in a major crisis and can no longer pay the salaries of its military forces.