Since there's a bunch of dipshits doing the "omg Russia #nuclear movements" BS again, my handy dandy guide on who's reliable regarding all such movements and their significance:
1) Principals in the nuclear chain of command. i.e: the President, Secretary of Defense, National Security Advisor, or head of nuclear forces, or their official spokesperson; and even then ONLY if they deliver that message from the podium as an explicit statement on that subject
Otherwise, in general, safe to ignore it