Islamic State posts video apparently of UK hostage criticising war buildup

Militant Islamist fighters on a tank take part in a military parade along the streets of northern Raqqa province June 30, 2014. REUTERS/Stringer

DUBAI (Reuters) - Islamic State militants fighting in Iraq and Syria released a video on Tuesday that appears to show British journalist John Cantlie criticising preparations for U.S-led attacks on the militant group, the SITE monitoring service reported.

Islamic State, which controls territory in Syria and Iraq, has already executed two U.S. journalists and one British aid worker in recent weeks in what it said was reprisal for U.S. air strikes against it in Iraq.