WASHINGTON — Israeli Prime Minister Benjamin Netanyahu is addressing a joint meeting of Congress for the first time since Hamas’ terrorist attack on Israel killed 1,200 people and resulted in the taking of hostages to Gaza, where about 100 are still believed to be held captive.

Netanyahu’s speech comes at a critical period: The U.S. is in the middle of a chaotic election year, and the Biden administration continues to push negotiators toward a cease-fire agreement that could end the war in…