The US President said "nothing definitive" was agreed during the meeting between the two leaders at the White House on Wednesday as nuclear talks intensify.
In his first international interview, Sasha Troufanov tells the BBC how he thought he would die in captivity after he was taken hostage on 7 October 2023.
BBC Verify has been examining disturbing footage from a mortuary in Tehran, showing scores of bodies. These images could hold clues about what’s happening inside Iran.
