1. The internal counterintelligence agency of the Russian Federation and successor to the Soviet KGB; formerly led by Vladimir Putin
   - FSB, Federal Security Service

Type of: Russian agency

• tropical year
• tropical zone
• tropically
• tropicbird
• tropics
• Tropidoclonion
• Tropidoclonion lineatum
• tropine
• tropism
• tropological
• troponomy
• troponym
• troponymy
• tropopause
• troposphere
• troppo
• trot
• trot out
• troth
• trotline
• Trotsky
• Trotskyism
• Trotskyist
• Trotskyite
• trotter