Sep 19th 2014 9:04PM (Reuters) - U.S. and Canadian fighter jets intercepted Russian aircraft that were flying near U.S. and Canadian air space this week, a military spokesman said on Friday. The United States and Russia are increasingly at odds over Ukraine, where Russian-backed separatists have been fighting for control of parts of the former Soviet state. On Wednesday, six Russian aircraft entered the United States' air defense identification zone (ADIZ), an area beyond sovereign U.S. airspace, according to a statement from NORAD, a U.S. and Canadian aerospace command, and U.S. Northern Command (NORTHCOM). In response, "two Alaskan-based F-22 fighter jets acting under the authority of NORAD identified and intercepted two Russian IL-78 refueling tankers, two Russian Mig-31 fighter jets and two Russian Bear long-range bombers in the ADIZ, west of Alaska," the statement said. On Thursday, Canadian fighter jets intercepted two Russian Bear long-range bo...