A "revisionist Russia" on "NATO's doorstep”

RT reports:

US State Department spokesperson Jen Psaki and Pentagon Press Secretary Rear Adm. John Kirby have been challenged over the Department of Defense's claims that the US must “deal” with “modern and capable” Russian armed forces on NATO's doorstep.

Russian Defense Minister Sergey Shoigu expressed “grave concern” and “surprise” at a Wednesday speech made by US Secretary of Defense Chuck Hagel during the Association of the United States Army’s annual conference. Hagel declared that US armed forces "must deal with a revisionist Russia - with its modern and capable army - on NATO's doorstep.”

Kirby was confronted by AP journalist Matt Lee over NATO expansion closer to the Russian borders at the State Department's daily press briefing on Thursday. Here is their exchange: