that extends about 1200 miles west southwest toward siberia to form the southern boundary of the bering sea. the illusions comprise for and constitute part of the territory of alaska, usa. there arec origin, cones on the chain still active. a permanent low-pressure area prevails there. cold air masses from the polar regions flow with the shearing effect against the warm, moisture laden air masses over the japanese current to form cyclonic disturbances. because of the earth's rotation, these disturbances move from , and thisst meteorological phenomena constitutes one of the most dangerous weapons in the arsenal of our enemies. it enables the japanese to operate behind the moving curtain of a storm. of june, 1942,ys they employ this advantage and it all out attempt to secure domination of the entire pacific >> look around you. the retiring the remnants of the task force, landed troops on the undefended islands, we immediately undertook the offensive and commenced our march toward asia. in late august of 1942, a large detachment of our troops landed on an island several hundred miles out along

on april 19th, a pair of russian spy planes flew near the bering sea, staying in the u.s. air defense zone for a few hours before departing. wednesday night the u.s. air force did not scramble any fighter jets or air borne warning planes, a wac planes. last night two stealth fighter jets were scrambled to intercept the russian bear bombers. the russian jets in both incidents remained in international air space. it's not immediately clear how close they came to mainland alaska. sandra? >> sandra: all right, jennifer griffin. what is the latest on the effort to retake raca as well? >> reporter: well, it's ramping up on the assad regime. today defense secretary jim mattis had a message about assad's chemical weapons. >> there can be no doubt in the international community's mind that syria has retained chemical weapons in violation of its agreement. and its statement that it had removed them all. there's no longer any doubt the amount of it i don't want to get into right now. we don't reveal some of that detail because we don't want to reveal how we're finding out. >> reporte