If more enemies of Israel join the war, there is a possibility of regional conflict.
Since October 7, Israel has launched thousands of retaliatory strikes in Gaza, but it has also targeted targets in Lebanon and Syria.
Late Wednesday night, Lebanon-based Hezbollah fired a surface-to-air missile at an Israeli drone.
Israel’s military said it had intercepted the missile and “attacked the source of the launch” in retaliation.
Hamas, Hezbollah and the Syrian government are supported by Iran, which denies Israel’s right to exist.
Tehran’s top diplomat on Wednesday accused Israel of carrying out “genocide” in Gaza.
Jordan’s King Abdullah became the latest leader to warn that continued violence “could lead to an explosion” in the region.
His wife Queen Rania accused Western leaders of “gross double standards” for not condemning Israel’s killing of Palestinian civilians in the bombing of Gaza.
Violence has also risen sharply in the occupied West Bank, where health officials said more than 100 Palestinians have been killed, mostly in raids by Israeli troops or in clashes with Israeli settlers.