First of all, nobody can close the border for ballistic missiles. It's the root of the problem.
US missiles in Ukraine are unacceptable for Russia, as well as Russian missiles in Texas are unacceptable for the USA.
Second, the problem is that Kievan Neo-Nazi regime discriminate and genocide local Russian population.
Third, it's all just irrelevant after Clinton's unprovoked invasion in Serbia and military occupation of Kosovo (which is, from the Serbs' POV - a part of Serbia).
The Nazies are the simple and observable fact. Our dear friends
Litwin and
ESay are Nazies.