Biden attends a ceremony for the return of the remains of dead soldiers in Jordan and awaits a response that may last weeks. Biden - who has so far said that he does not want escalation in the Middle East or an open war with Iran - is facing pressure to respond firmly to Tehran.
American forces in Iraq and Syria have been subjected to more than 150 attacks with drones and missiles carried out by groups loyal to Iran. Most of these attacks were claimed by the "Islamic Resistance in Iraq", which consists of factions supported by Iran.