▁intercept ors ▁may ▁be ▁augment ed ▁later ▁by ▁the ▁naval ▁A eg is ▁Ball istic ▁Miss ile ▁Def ense ▁System ▁or ▁by ▁ground - based ▁miss iles ▁in ▁other ▁locations . ▁ ▁During ▁ 1 9 9 8 , ▁Def ense ▁secretary ▁William ▁C ohen ▁proposed ▁sp ending ▁an ▁additional ▁$ 6 . 6 ▁billion ▁on ▁inter cont inental ▁ball istic ▁miss ile ▁defense ▁programs ▁to ▁build ▁a ▁system ▁to ▁protect ▁against ▁attacks ▁from ▁North ▁Korea ▁or ▁accident al ▁launch es ▁from ▁Russia ▁or ▁China . ▁ ▁In ▁terms ▁of ▁organization , ▁during ▁ 1 9 9 3 ▁S DI ▁was ▁re organ ized ▁as ▁the ▁Ball istic ▁Miss ile ▁Def ense ▁Organ ization ▁( B M DO ). ▁In ▁ 2 0 0 2 , ▁it ▁was ▁renamed ▁to ▁Miss ile ▁Def ense ▁Agency ▁( MD A ). ▁ ▁U . S ▁withdraw al ▁from ▁Anti - B all istic ▁Miss ile ▁Tre aty ▁in ▁ 2 0 0 2 ▁On ▁ 1 3 ▁June ▁ 2 0 0 2 , ▁the ▁United ▁States ▁with d rew ▁from ▁the ▁Anti - B all istic ▁Miss ile ▁Tre aty ▁and ▁recom men ced ▁developing ▁miss ile ▁defense ▁systems ▁that ▁would ▁have ▁formerly ▁been ▁prohib ited ▁by ▁the ▁bil ater al ▁treat y . ▁The ▁action ▁was ▁stated ▁as ▁needed ▁to ▁defend ▁against ▁the ▁possibility ▁of ▁a ▁miss ile ▁attack ▁conducted ▁by ▁a ▁ro gue ▁state . ▁ ▁The ▁next ▁day , ▁the ▁Russian ▁Federation ▁dropped ▁the ▁ST ART ▁II ▁agreement , ▁intended ▁to