Sixty nations, including the United States, China and Saudi Arabia, take part in the Pakistan Navy's AMAN-25 military exercise in the Arabian Sea near Pakistan's port city of Karachi. "The basic purpose of this exercise, with the motto 'Together for Peace', all these 60 nations, they are here, they are together with us for peace," says Humayun Yaqoob, Captain of the Pakistan Navy. IMAGES AND SOUNDBITES