unhealthy foods will be banned because of new guidelines. schools are encouraged but not required to extend the policy to evening and weekend events such as the sports concessions and fundraisers. so no more bake sales. maybe a fruit stand instead. tonight we have a new series on big issues facing the country in this election year. first up, national security. the presidential candidate position on the war on terror. here is senior white house foreign affairs correspondent wendell goler. both the president and his likely republican channeler accused the other of flip-flops and bad policy in the war against al-qaeda and the war on terror. a year after the death of usama bin laden mr. obama denies taking political advantage of it. i hardly think you have seen any excess i celebration taking place here. perhaps not if here is the white house. at campaign headquarters in