i guess you could swing illegal invasion of a sovereign country, lying to obtain military goals, illegal occupation, facilitating mass murder, destroying an entire nation state forever, complicity in torture, executions, facilitating ethnic cleansing, genocide, kidnapping, circumvention of due process, human rights abuses, rape, torture, murder of civilians, destruction of public and private property, destruction of hospitals, schools, religious places of worship etc...i mean, what are you guilty of if your war caused all that to happen and many of your soldiers were directly involved in it?
is destabilisation of the world a war crime? put him down for destabilisation of the world too. he's a dick. fuck him. change the definition of a war criminal so it doesn't only apply to leaders from poor countries we don't like.