Cika wannan jumla: A shekara ta 2002, Amurka da Rasha sun amince a cikin
Yarjejeniyar SORT don rage yawan kayan ajiyar su zuwa ba fiye da 2,200 warheads kowane. A shekara ta 2003, Amurka ta yi watsi da shawarwarin Rasha don kara rage yawan makaman nukiliya na kasashen biyu zuwa 1,500 kowannensu. A shekara ta 2007, a karon farko cikin shekaru 15, Amurka ta gina sabbin makamai masu linzami. Waɗannan sun maye gurbin wasu tsofaffin makamai a matsayin wani ɓangare na shirin haɓaka Minuteman III. 2007 kuma ya ga na farko Minuteman III makamai masu linzami cire daga sabis a matsayin wani ɓangare na drawdown. Gabaɗaya, ɗakunan ajiya da tsarin turawa suna ci gaba da raguwa a cikin adadin a ƙarƙashin sharuɗɗan sabon yarjejeniyar START.