Gadi Eisenkot, a former Israeli military chief and the leading rival of Prime Minister Benjamin Netanyahu, speaks during a campaign event in Haifa, Israel, on Sept. 23, 2026. On Saturday, Nov. 7, President Isaac Herzog of Israel selected Eisenkot to try to form a new government, handing him the daunting task of forging a parliamentary coalition after an indecisive national election last month. (Amit Elkayam/The New York Times) By EPHRAT LIVNI and AARON BOXERMAN Israel’s president on Saturday…