1/
6/
The first one (M6/1500km) is believed to be known under the name GZUR, or the 'Hypersonic guided missile', developed by Raduga design bureau in Dubna.
I think it may be the one tested recently.
Or not.
7/7
Hypersonic missiles are just another step in evolution.
Things will get more complicated for any adversary...
8/
And, well, trade will be hard for arms control community. But it will be an interesting challenge.
END