this youtube video posted over the weekend by isis shows thick plumes of black smoke rising from the oil refinery. the country's largest. the refinery had been under government control for months. isis in a statement posted online claimed to have broken through the refinery's outer defenses after deploying a suicide bomber and attacking from multiple sides. and this picture, set to be of their command and control center, a glimpse of the technology use to direct their military operations. also over the weekend, launched multiple assaults in anbar province. taking over three towns north of the provincial capital, sending residents fleeing on foot to safer ground in the city. in another area not far from baghdad. iraqi security forces and local fighters battled for hours to keep isis from advancing.