On December 20, 2011, the Strategic Rocket Forces and the Air and Space Defense Forces conducted a successful test launch of the 53T6 (Gazelle) interceptor of the A-135 missile defense system, which is currently deployed around Moscow. The test launch took place at 12:01 MSK (08:01 UTC) at the Sary-Shagan test site in Kazakhstan. The last time the 53T6 interceptor was tested in October 2009.

UPDATE: Some sources suggest that it was a test of a modernized version of the interceptor, also known as 53T6M.