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Lawmakers: Russia's violation of nuke treaty has 'worsened'

FILE - In this June 9, 2016, file photo, House Intelligence Committee Chairman Rep. Devin Nunes, R-Calif., right, and House Armed Services Committee Chairman Rep. Mac Thornberry, R-Texas, left, talk in Washington. Russia’s violation of a key nuclear arms control treaty has become more egregious, Nunes and Thornberry said in a letter released Oct. 19, that urged the Obama administration to confront and impose penalties against Moscow. (AP Photo/J. Scott Applewhite, File)

FILE - In this June 9, 2016, file photo, House Intelligence Committee Chairman Rep. Devin Nunes, R-Calif., right, and House Armed Services Committee Chairman Rep. Mac Thornberry, R-Texas, left, talk in Washington. Russia‚Äôs violation of a key nuclear arms control treaty has become more egregious, Nunes and Thornberry said in a letter released Oct. 19, that urged the Obama administration to confront and impose penalties against Moscow. (AP Photo/J. Scott Applewhite, File)  (The Associated Press)

Two top Republican congressmen are claiming that Russia's violation of a key nuclear arms control treaty has become more egregious.

In a letter released Wednesday, the two congressmen urge President Barack Obama to impose penalties on Moscow.

The letter comes from the chairman of the House intelligence committee, Devin Nunes of California, and the chairman of the House Armed Services Committee, Mac Thornberry of Texas.

Russia denies it has violated the Intermediate-Range Nuclear Forces Treaty the two nations signed in 1987. The treaty prohibits possession, production or test-flying a ground-launched cruise missile with a range of 300 to 3,400 miles.

Late last year, defense officials told Congress that Russia had tested a ground-based system well into the ranges covered by the treaty.