Russia Tested a Nudol AntiSatellite Weapon on Dec 23, 2018

According to US sources, quoted by CNBC, Russia conducted a test of the Nudol ASAT system on December 23, 2018. The missile was launched from a mobile launcher from a test site in Plesetsk. The launch complex used to test the Nudol missile was found near the site used for Thyklon space launches.

That would be the second Nudol test in 2018 - the first one took place in April 2018. CNBC also quotes a source as saying that it was "the seventh overall test of the system." There were indeed three launches in 2014-2015 (one of them unsuccessful) and two in 2016 - in May and in December. Apparently there were no launches in 2017.

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Clearly, the US is the aggressor in space.