Israel is treating the new documentary “NAZA,” by the Israeli filmmakers Yuval Abraham and Rachel Szor, less like bad publicity than a national security crisis. Eyal Zamir, chief of staff of the Israel Defense Forces, pledged to use “every tool at our disposal” against the documentary, which features anonymous interviews with 24 intelligence officers and soldiers, most involved in remote strikes in Gaza. Prime Minister Benjamin Netanyahu has called for legislation that would let the state strip Abraham and Szor of their citizenship. Israel’s culture minister has asked the Interior Ministry to investigate them for treason. Activists and staff members...