Washington, Muharram 20, 1434, Dec 4, 2012, SPA - U.S. President Barack Obama met with Bulgarian Prime Minister Boyko Borissov at the White House Monday. "I have to say at the outset that Bulgaria has proven to be one of our most outstanding NATO allies," Obama told reporters in the Oval Office ahead of his meeting with Borissov. "Bulgaria has been a strong supporter of the efforts in Afghanistan, and we'll have the opportunity to touch briefly on the transition that needs to take place there. But I want to thank him and his fellow countrymen for their service and sacrifice." "We've also had excellent cooperation on criminal investigations, law enforcement, counterterrorism, " Obama said. "I also would like to thank you for the excellent cooperation with the United States in such areas as social security, national security, counterterrorism, combating organized crime. Our law enforcement services work together very effectively," Borissov said. --SPA 10:49 LOCAL TIME 07:49 GMT www.spa.gov.sa/1055279