Government officials in the United States said Thursday that Russia is firing artillery across the border into Ukrainian territory, but refused to provide any evidence when grilled by an Associated Press reporter. READ MORE: br RT LIVE br Subscribe to RT! br Like us on Facebook Follow us on Twitter Follow us on Instagram Follow us on Google+ br RT (Russia Today) is a global news network broadcasting from Moscow and Washington studios. RT is the first news channel to break the 1 billion YouTube views benchmark.