The Pact was made for ten years : On 12 June 1940 the order for total military blockade of Estonia was given to the Soviet Baltic Fleet On 14 June , the Soviet military blockade of Estonia took effect . Two Soviet bombers downed a Finnish passenger airplane Kaleva flying from Tallinn to Helsinki and carrying three diplomatic pouches from the U.S. legations in Tallinn , Riga and Helsinki
Kaleva
Kaleva (airplane)
Estonia–Russia relations