The golden rule of the criminal underworld used to be simple: if things get too hot at home, you flee overseas to lie low.
But a terrifying, cold-blooded execution on the busy streets of Ho Chi Minh City just proved that your past can track you down anywhere on earth.
With a Coconut Cartel leader slain Vietnam reality setting in, law enforcement agencies are bracing for an absolute explosion of retaliatory violence back on Australian soil.