Israel has not ruled out an attack on Iran's nuclear facilities in the coming months despite President Donald Trump telling Israeli Prime Minister Benjamin Netanyahu that the U.S. was for now unwilling to support such a move, according to an Israeli official and two other people familiar with the matter.

Israeli officials have vowed to prevent Tehran from acquiring a nuclear weapon and Netanyahu has insisted that any negotiation with Iran must lead to the complete dismantling of its nuclear program.

U.S. and Iranian negotiators were holding a second round of preliminary nuclear talks in Rome on Saturday.