Iran's elite Revolutionary Guards have said that by March next year it will deploy a domestically manufactured drone capable of carrying out air strikes.Guards Brigadier General Amir Ali Hajizadeh said the super advanced bomber drone, manufactured by the Revolutionary Guards, will be operational in the second half of this year. He did not give details on the aircraft. In February, Iran opened two production lines for the manufacture of the drones, saying the unmanned aircraft would be capable of carrying out assaults with high precision. Iran's drone technology has caused concern in the United States, with Defence Secretary Robert Gates recently warning they could pose difficulty for the military in Afghanistan.