The Council of Europe has published a convention to limit cultural theft.
Many terrorist groups and extremist militias are funded by art theft, stealing and selling historical treasures.
Some experts think ISIS has raised $150 million from selling off antiquities.
The new convention standardizes laws and penalties and aims at every phase of the process from digging up, to smuggling to selling.
“If there are no buyers, there are no looters,” said Cypriot Foreign Minister Ioannis Kasoulides.