The quest for peace in major conflicts has rarely been so desperate and so seemingly futile. In Gaza, talk of ceasefires, truces and pauses typically ends in tears. In Ukraine, the war is now well into its fourth year with no end in sight, despite Donald Trump’s new 50-day deadline. Syria burns anew. Sudan’s horrors never cease. Last year, state-based conflicts reached a peak – 61 across 36 countries. It was the highest recorded total since 1946. This year could be worse. The sheer scale and depravity of war crimes and other conflict-zone atrocities is extraordinary. The deliberate, illegal targeting...