New Delhi, Feb. 28 -- US President Donald Trump said on Friday (February 27) that while he remains dissatisfied with Iran's unwillingness to commit to giving up nuclear weapons, he still hopes for a diplomatic solution - but warned that "sometimes" the United States may need to use force.

Speaking to reporters as he left the White House for a trip to Texas, Trump said that recent negotiations between US envoys and Iranian officials in Geneva ended without a deal and that Iran has is to meet key US demands.

Trump said more discussions on Iran would take place later on Friday, though he did not specify with whom those talks would be held. Top US defence officials were at the White House on Thursday for related meetings.

"We want no nucle...