A ceasefire was announced on April 8 through Pakistani mediation, followed by talks hosted in Islamabad on April 11-12, but the negotiations ended without an agreement.

Trump later said the truce had been extended at Pakistan’s request pending a proposal from Tehran.

He signaled on Monday that he was unlikely to accept Iran’s latest proposal to end the war after Tehran proposed a plan to reopen the Strait of Hormuz while leaving questions about its nuclear programme for later negotiations.