I believe the point is to have the interceptor missiles, hit the enemy missiles while they are in the boost phase... Before they can reach escape velocity, and before their warheads separate and go completely ballistic...
After that they are almost impossible to hit...
Vlad Putie, and his ex soviet cronies, are having problems at home.... So they need something, to distract their people, from their nefarius activity at home...
Also It's alittle like France, sour grapes, because the world really doesn't give a ratsass about what they say anymore...
OG