The Detached Mission (1986)

This 1985 action-adventure film pits a detachment of Soviet naval infantry (equivalent of the U.S. Marine Corps in the Soviet Union) against the CIA, U.S. Army, Air Force, and Navy. A CIA operation to prevent a summit that threatens to undermine profits of defense contractors goes awry, and Major Shatokhin of the Soviet naval infantry has to lead his men on a mission to prevent World War III.