WASHINGTON, Aug 5 (Reuters) - U.S. President Joe Biden

and Jordan's King Abdullah discussed efforts to de-escalate

tensions in the Middle East on Monday, the White House said

after Iran vowed to retaliate against Israel over the killing of

a Hamas leader in Tehran.

"The leaders discussed their efforts to de-escalate regional

tensions, including through an immediate ceasefire and hostage

release deal," the White House said in a statement. Their call

followed a rare visit to Iran by Jordanian Foreign Minister

Ayman Safadi.