Star Wars. How likely are Russia's threats to launch nuclear weapons into space and use them against satellites of other countries?

Cartoon by Oleksandr Sydorenko

According to intelligence that the U.S. government shared with Congress and European allies a couple months ago, the terrorist federation is developing a new space-based anti-satellite nuclear weapon.  How real is this threat, given that Russia recently managed to launch the Angara A5 heavy launch vehicle on only the third attempt?

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