A Thai Navy instructor demonstrates to U.S. Marines how to catch a cobra during a jungle survival exercise as part of the "Cobra Gold 2013" joint military exercise, at a military base in Chon Buri province February 20, 2013. About 13,000 soldiers from seven countries, Thailand, U.S., Singapore, Indonesia, Japan, South Korea and Malaysia are participating in the 11-day military exercise. REUTERS/Damir Sagolj (THAILAND - Tags: POLITICS MILITARY SOCIETY)