Considering the heated rhetoric on this issue, this is pretty mild.
What they are saying is that they will cut military and diplomatic ties with nations that sell Russian built or Russian designed weapons to Georgia.
All in all, this a remarkably narrowly drawn statement, that it will not be offering support or spares to nations that ship Russian, and one would assume Soviet, weapons to Georgia.
Compared to earlier statements made where various government officials appeared to insult each other over parentage and penis size, it’s a major step forward.