People around the world are still paying for the sins of the cold war, and the US and Russia are still enamored with being best buddies and righteous enemies
I suddenly think warfaring companies should have a special tax applied to them: a "humanitarian reconstruction" tax. You make money from chaos? We'll take some of it to bring back peace.
Over here, mining companies are now required to put some money in to restore (or at least, stabilize) the environment after their operations are over. It would be the same, and server a similar purpose.