BUILDUP_20140306_123212The Obama administration moved Thursday on several fronts to counter Russia’s aggression in Ukraine’s Crimea, sending fighter jets to allied countries, imposing visa restrictions on Russians and strongly decrying a planned referendum in Crimea to split from Ukraine and join Russia.  “We are well beyond the days when borders can be redrawn over the heads of democratic leaders,” Obama said Thursday at the White House.  Obama was reacting to a vote in Crimea to join Russia — which is scheduled for a referendum in 10 days. Obama, echoed by the State Department, said this move would “violate the Ukrainian Constitution and violate international law.”  MORE