TEL AVIV — Israel is bracing for a potential multiday attack by Iran and its ally Hezbollah following the assassination of two senior militant leaders last week, an Israeli official told NBC News.

The official said Israel fears waves of missiles and drones could be fired over several days in response to the killing of Hamas political leader Ismail Haniyeh and Hezbollah commander Fuad Shukr.

“They’ll just try to wear us out,” the official said.

This tension marks yet another escalation…