Abdullah Gul says 21 of the 22 nations in the grouping, which includes Israel, have also called on the Jewish state to join the Nuclear Nonproliferation Treaty and place all of its nuclear facilities under the safeguard of the International Atomic Energy Agency.

Israel managed to block a joint declaration by the group that would have condemned it, forcing Turkey to issue a separate statement.

Israel says its soldiers acted in self-defense in May 31 and began shooting only after a mob of activists attacked them after the commandos boarded the ship.