Refugee crisis -> Middle East chaos -> Let's look back 20 years and see who decided to go into Iraq with a giant force of incompetence (or as that fuckwit said "Unknown unknowns") and created insurgent forces that grew into ISIS, etc? -> Can we ask them for compensation?
When grandparent said "The rest of the world has to pay", I don't think they'd disagree with the 2 above examples...