Generally when states sign treaties it applies to the de jure state, not just what it de facto controls. > Given Palestine is a signatory does it mean they hav

Generally when states sign treaties it applies to the de jure state, not just what it de facto controls. > Given Palestine is a signatory does it mean they have to take action to extradite the Hamas leadership to face trial? What consequences do they face if they fail to do that? Almost certainly nothing. They are obligated to help, but realistically if the palestine authority had the ability to capture hamas leadership i imagine they would have done so a long time ago, as the two sides fought what was essentially a civil war a while back.