NATO Joint-Intelligence has reportedly warned Members of the Alliance that they have seen indications that Russia may be preparing to conduct a form of Nuclear Weapons Test in the Black/White Sea or near the Ukrainian Border, and that they must prepare for the possibility.
A military train carrying Equipment from the 12th Chief Directorate; responsible within the Russian Ministry of Defence for their Nuclear Arsenal, has been seen traveling west towards the Ukrainian border.
Russian Nuclear Military Train Is Seen On The Move: Reports | South Asian Daily