From Desmond Butler, AP:  Republicans are trying to block Obama administration overtures to Russia on missile defense, creating a potential obstacle to arms control talks.

Lawmakers are proposing a measure that would bar the administration from sharing classified missile defense data with Russia. . . .

The proposal is part of a defense bill that is in its early stages in the legislative process. Its prospects for becoming law are uncertain. . . .

The defense bill would also direct the Missile Defense Agency to inform Congress about any recent instances in which it has already declassified information to provide it to Russia. 

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