US calls Iran world’s leading ‘state sponsor of terrorism’ A US State Department report says Iran uses its proxies and expands its influence around the world. It is part of an annual report which claims Iran spends nearly $1bn a year, supporting what the United States describes as “terrorist groups”. The US State Department report has accused Iran of being the world’s leading “state sponsor of terrorism”. In the report, it praised Gulf countries for making progress, but says more needs to be done. Al Jazeera’s Victoria Gatenby reports.