Israeli special forces were responsible for the assassination of a Syrian military official in 2008, a leaked US intelligence file says.
Brig Gen Mohammed Suleiman was shot by a sniper while at a beach resort near the Mediterranean port of Tartous.
Israel has never commented publicly on suspicions that it was involved.
But a document leaked to The Intercept website by American whistleblower Edward Snowden says Israeli naval commandos were behind the shooting.
Former US intelligence officers said its classification markings indicated the National Security Agency (NSA), for which Mr Snowden worked as a contractor, had made the discovery through monitoring Israeli communications.