By CNN's Tracey Webb
Your daily scoop of what State of the Union is watching today, August 28, 2014
1. Ukraine says it has been invaded by Russia. A U.S. official says as many as 1,000 Russian troops are in Ukraine to aid pro-Russian rebels. Russia denies that it has launched a military invasion or arming the separatists. In a U.N. Security Council emergency meeting on Ukraine, U.S. Ambassador Samantha Power accused Russia of lying about its actions. “Russia is not listening, instead they have come before this council to say everything but the truth,” Power said. The latest incident comes just two days after Russian President Vladimir Putin and Ukraine's President Petro Poroshenko were photographed shaking hands.