US said to believe Iran attack on Israel imminent, Biden to hold situation room meeting  The Times of IsraelBiden, Harris head to Situation Room as Iran threatens attack on Israel  The HillUS says military moves in Middle East aimed at de-escalating tensions  Reuters.comBiden convening national security team as tensions flare between Israel and Iran  NBC NewsBiden To Meet National Security Chiefs As Mideast War Fears Grow  Barron’s