Greece : The trip is partially meant to commemorate a May 2010 incident in which Israeli troops boarded Mavi Marmara , a Turkish ship filled with humanitarian aid and 700 activists from various countries . The Quartet urges all governments to send additional flotillas . The captain of The Star of Hope has been arrested , Greek authorities say . The U.S. citizen is accused of misleading authorities and putting passengers at risk . His ship is one of 10 in a flotilla meant to challenge Israel 's blockade of Gaza .
Greece : The Quartet urges all governments to send additional flotillas . The captain of The Star of Hope has been arrested , Greek authorities say . The U.S. citizen is accused of misleading authorities and putting passengers at risk . His ship is one of 10 in a flotilla meant to challenge Israel 's blockade of Gaza .