Bush said the National Guard troops would fill in temporarily while the nation's Border Patrol force is expanded.

NPR: Bush Calls for Troops, Funds to Secure Border

France, which has troops in nearby Djibouti and also participates in a multi-national naval force patrol in the area, has intervened twice to release French sailors kidnapped by pirates.

BBC: Warships surround Somali pirates

Japan's defense ministry said a submarine was spotted by a P-3C Maritime Self-Defense Force patrol aircraft Sunday night passing near Kume Island in Japan's Okinawa Prefecture in the East China Sea.

WSJ: Japan on Alert Over Submarines Near Its Territorial Waters