NATO launched its biggest military exercise in 13 years, mobilizing 36,000 soldiers, sailors and airmen from more than 30 countries, including, along with NATO allies, Austria and Sweden. Trident Juncture 2015 aimed to test the alliance's ability to respond to new security threats is hosted by Italy, Spain and Portugal at 16 different locations. More than 140 aircraft and about 90 ships will take part in this key exercise. The start of the drills - in this photo gallery by TASS.
Largest NATO military exercise Trident Juncture 2015
Trident Juncture 2015 is hosted by Italy, Spain and Portugal at 16 different locations with around 36,000 troops from more than 30 nations
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F16 jet fighter jet parked on the tarmac during the opening ceremony of NATO Trident Juncture exercise 2015, in Trapani, Italy
© AP Photo/Antonio Calanni Jet fighters parked on the tarmac in Trapani, Italy
© AP Photo/Antonio Calanni Soldiers at Birgi airbase in Trapani, Italy
© AP Photo/Antonio Calanni Boeing KC-767 aerial refueling and strategic transport aircraft flying along jet fighters during NATO Trident Juncture exercise 2015
© AP Photo/Antonio Calanni US marine armoured vehicles leaving the beach after getting off from US Navy hovercrafts at Raposa Media beach in Pinheiro da Cruz, south of Lisbon
© AP Photo/Steven Governo US marines and portuguese fuzileiros lining up to secure US Navy hovercrafts after landing
© AP Photo/Steven Governo US Navy hovercrafts at Raposa Media beach in Pinheiro da Cruz, south of Lisbon
© AP Photo/Steven Governo