The European Union issued a warning in February 2019 that Cyprus, an EU member, was selling EU passports to Russian oligarchs. This would allow allow organised crime syndicates to get into the EU. In 2020 leaked documents revealed a range of former and current officials from Afghanistan, China, Dubai, Lebanon, the Russian Federation, Saudi Arabia, Ukraine and Vietnam who bought a Cypriot citizenship before a change of the law in July 2019. Cyprus and Turkey have been engaged in a dispute over the extent of their exclusive economic zones. It was apparently caused by the potential for oil and gas exploration in the area.