Two quick thoughts on the NSS.
1) US is dead serious about coercing allies to abandon climate commitments and swallow US fossil exports. "Climate realism" lives in Trumpworld as use of non-fossil energy is equated with "subsidizing our adversaries".
1/3
Clear instance of what I described in essay below. Trump is willing to use power of US govt not just to halt US climate action, but to undermine beliefs of actors everywhere that future is carbon constrained, by imposing pain on those who try to reduce emissions.