President Biden met with the national security team Monday.
Meeting aimed at addressing potential Iranian retaliation against Israel.
Tensions escalated after Hamas leader Ismail Haniyeh was killed in Iran.
Biden received updates on Middle East threats and diplomatic efforts.
U.S. prepares to support Israel if attacked by Iran or its proxies.
Iran blames Israel for Haniyeh's death, vows retaliation.
Israel, though not claiming responsibility, is ready for any scenario.
Concerns of regional conflict expansion among world leaders.
Senior Hezbollah commander also killed in Lebanon by Israel.
U.S. urges restraint and engages in diplomatic efforts to de-escalate.
Military presence in the Middle East increased with jets and warships.
U.S. emphasizes the importance of regional stability and defending Israel.