While reading the link Raoul referred to below about the recovery of the BOR-4, I came across reference to the Hurricane space interceptor. Designed (but never built or flown) by the Russians in response to US Military use of the Space Shuttle, this was a "Buck Rogers" space plane equipped with space-to-space missiles intended to disble or destroy US space assets.

A part of the Buran development programme that never made it...

The "Hurricane" project

This apparatus developed from the studies of "BOR-4" should have a 12.5 m length, a wingspan of 9.5 m and a mass of 13-15 t. It was elaborate for being an interception vessel, armed with space-space missiles. For its putting into orbit it should use the "Zenith-2" launcher. According to the report of the American ministry of defense in 1986 it was created in response of the military uses of the American shuttle. In 1987 the "Hurricane" project is stopped, on the side we can see illustrations of the work "The Secret Story of the Soviet Space Shuttle" where we see the "Hurricane" in miniature version on a "Proton" and "Zenith-2" launcher, and a space shuttle version on the "Energia" launcher.

Scroll 3/4 down page for the section

Interesting to see the twin-launch configuration for the miniature version. Was this a genuine test article? If so, why launch two in one shot? Or was it a Kamikaze-style space plane?