BAGHDAD - Iraq's military is trying to staunch spillover from Syria's crisis, tightening border controls as its troops exchange fire with gunmen, rockets hit a frontier patrol and Syrian army shells land on an Iraqi border town.
Iraq's army last week took over frontier operations. A border crossing to Syria's Albu Kamal is temporarily closed as Syrian forces backed by aircraft and rebels fight to control the town, which sits on key supply routes from Iraq.
Spillover from Syria worries an Iraqi government struggling to overcome its own insurgency and legacy of sectarian violence. Baghdad acknowledges that Sunni Islamist fighters are crossing the porous border to fight against President Basher Assad.