There’s actually quite a bit of nuclear proliferation news in the past couple of days, besides the New START Treaty.

Reducing the overall warheads by the US and Russians is a feather in Obama’s cap to be sure. Russia’s military capabilities are increasingly tied to its nuclear deterrence as its conventional capabilities are seen as behind that of the US (via proxies), but the Russian’s can’t continue spending as they have to maintain their existing warheads - so this is a win win for them (and us).

The other news is that the US is continuing its partnerships with various countries to recycle their HEU into LEU - reducing the threat posed by having HEU (that can be much easier to turn into weapons grade uranium) floating around at facilities that aren’t nearly as secure as they ought to be.

Oh, and the US has been helping the Russians dismantle and render their weapons grade uranium safe for civilian purposes (and we’ve got plenty of Russian uranium being used in US civilian nuclear power plants).