Bro ken ▁Sh ield : ▁ ▁Miss iles ▁designed ▁to ▁destroy ▁incoming ▁nuclear ▁war head s ▁fail ▁frequently ▁in ▁tests ▁and ▁could ▁increase ▁global ▁risk ▁of ▁mass ▁destruction ", ▁Scient ific ▁American , ▁vol . ▁ 3 2 0 , ▁no . ▁no . ▁ 6 ▁( J une ▁ 2 0 1 9 ), ▁pp . ▁ 6 2 – 6 7 . ▁ ▁" Current ▁U . S . ▁miss ile ▁defense ▁plans ▁are ▁being ▁driven ▁largely ▁by ▁technology , ▁politics ▁and ▁fear . ▁ ▁Miss ile ▁def enses ▁will ▁not ▁allow ▁us ▁to ▁escape ▁our ▁vulner ability ▁to ▁nuclear ▁weapons . ▁ ▁Instead ▁large - scale ▁develop ments ▁will ▁create ▁bar riers ▁to ▁taking ▁real ▁steps ▁toward ▁reducing ▁nuclear ▁ris ks — by ▁blocking ▁further ▁cut s ▁in ▁nuclear ▁ar sen als ▁and ▁potentially ▁sp urr ing ▁new ▁deploy ments ." ▁ ▁( p . ▁ 6 7 .) ▁ ▁External ▁links ▁ ▁Article ▁on ▁Miss ile ▁Th re at ▁Sh ift ▁to ▁the ▁Black ▁Sea ▁region ▁ ▁Video ▁of ▁the ▁End o - At mos pher ic ▁Inter ceptor ▁miss ile ▁system ▁test ▁by ▁India ▁ ▁Video ▁of ▁the ▁Ex o - At mos pher ic ▁inter ceptor ▁miss ile ▁system ▁test ▁by ▁India ▁ ▁Center ▁for ▁Def ense ▁Information ▁ ▁Federation ▁of ▁American ▁Scient ists ▁ ▁Miss ile Th re at . com ▁ ▁Stanley ▁R . ▁M ick el son ▁Saf egu ard ▁complex ▁ ▁History ▁of ▁U . S . ▁Air ▁Def ense ▁Systems ▁▁▁ ▁Category