%0 Generic %T NATO : enlargement and effectiveness : hearing before the Committee on Foreign Relations, United States Senate, One Hundred Tenth Congress, second session, March 11, 2008. %U https://ezaccess.libraries.psu.edu/login?url=https://www.heinonline.org/HOL/Page?handle=hein.cbhear/fdsysajzr0001&id=1&size=2&collection=congrec&index=cbhear