“Prime Minister Vladimir Putin said Tuesday that Russia wants the U.S. to share detailed data about its planned missile shield under a new arms control treaty, signaling potential new difficulties in the ongoing negotiations between Moscow and Washington. Putin’s televised remarks set a defiant tone as negotiators try to hammer out a successor to the 1991 Strategic Arms Reduction Treaty that expired on Dec. 5. The two countries had hoped to reach a deal before the end of the year, but problems persist.” (12/29/09)