
Separately, dozens of armed men in military uniforms without markings are patrolling the airport in Simferopol
The number of Russian troops that have surged into Ukraine in recent days remains well below that threshold, Brennan said, according to U.S. officials who declined to be named in describing private discussions and declined to name the legislator.
Though Brennan disagrees that the treaty justifies Russia's incursion, he urged a cautious approach, the officials said. Administration officials have said Moscow violated the treaty, which requires the Russian navy, which bases its Black Sea fleet in Sevastopol, to coordinate all military movements on the Crimean peninsula with Ukraine.]
The next day, Russian troops took up positions around key facilities in Crimea, and by nightfall the CIA assessed that Russia was in control of the region, officials said.
"This was not predicted," said a U.S. official, who asked not to be named in discussing the classified briefings.
The intelligence officials defended their analysis, however, saying Putin may have made a spur of the moment decision to take military action.













