INTERNATIONAL WATERS, Israel
An Israeli naval officer smiles as he takes a break with his comrades during a drill aboard an Israeli...
Israeli naval officers play backgammon as they take a break during a drill aboard an Israeli corvette military vessel on international waters May 13, 2015. U.S., Greek and Israeli navies took part in "Noble Dina", a two-week long trilateral naval exercise focusing on maritime cooperation between the participating nations. Picture taken May 13, 2015. REUTERS/Amir Cohen