[dennisw]

The idea that he’s going to blow one up over the black sea is completely invented in London and DC.

Probably, but I like that effective propaganda. It makes Poot look like a clown

He’s never said a word about blowing one up as a demonstration.

Not publicly-
True, but at Putin's directions, there were preparations to do an underground test in the Arkhangelsk region close to Finland and Europe. Nikolai Patrushev thwarted this twice. This was all over twitter.

[DesertRhino]

No, it isn’t effective. Nobody believes it .