sentences:  The US National Air and Space Intelligence Center NASIC always believed that Yars was just a Topol M in violation of the START Treaty, something that is reflected in both the Mod 2 designation and the illustrations showing the SS-27 Mod 1 and Mod 2 to be identical.It is essentially the same missile as the Mod 1 version Topol-M except the payload “bus” has been modified to carry multiple independently targetable warheads (MIRV).Each missile is thought to be able to carry up to 4 warheads, although there is uncertainty about what the maximum capacity is (but it is not 10 warheads, as often claimed in Russian news media).