The deputy commander of the Khatam al-Anbia Air Defense Base says the air defense units are closely monitoring the military movements of foreign forces in the region, which have increased recently. "We now see that even small aircraft cannot hide from the eyes of the air defense units; and the movements of foreign forces, which have increased in recent days, are being closely monitored," Fars news agency quoted Lieutenant General Alireza Sabahifard as saying on Wednesday.