Tensions have soared following nearly 10 months of war in Gaza and the killing last week of a senior Hezbollah commander in Lebanon and Hamas’ top political leader in Iran.

Iran and its allies have blamed Israel and threatened retaliation. Hamas says it has begun discussions on choosing a new leader.

Netanyahu said Israel was ready for any scenario. Jordan's foreign minister was making a rare trip to Iran as part of diplomatic efforts — “We want the escalation to end,” Ayman Safadi said — while the Pentagon has moved significant assets to the region.

“We are doing everything possible to make sure that this situation does not boil over,” White House deputy national security adviser Jon Finer told ABC.

In Israel, some prepared bomb shelters and recalled Iran's unprecedented direct military attack in April following a suspected Israeli strike that killed two Iranian generals. 

The Hezbollah group and Israel have continued to trade fire along the Lebanon border since the war began, with the severity growing in recent months.

The Lebanese state-run National News Agency said an Israeli strike targeted a house in Beit Lef, and the Lebanese Health Ministry said two people were critically wounded.

A growing number of countries, including the U.S., are encouraging citizens to leave Lebanon after last week's killing of a senior commander.