Islamic State (IS) group militants killed three Syrian regime soldiers in an attack Tuesday on an army position in the Badia desert, a war monitor said. The militants “attacked a site where… regime forces were stationed,” the Syrian Observatory for Human Right said, adding that a lieutenant colonel and two soldiers died. The Syrian army had sent forces to the area, where IS attacks are common, ahead of an expected wider sweep, said the Britain-based Observatory which has a network of sources inside the country. In an attack on May 3, IS fighters killed at least 15 Syrian pro-regime fighters …