The back story is in 2002, the US started suppling military aid to Georgia to fight “al Queida backed forces”, but these forces never existed, and the aid continues.

The Russians, quite reasonably, see this as a provocation directed at them. (see here and here)

The arming of Georgia, like the westward expansion of NATO, is seen by the Russian government as a real threat to their own security, particularly given the guarantees made in the early 1990s that there would be no westward expansion of NATO.

As I’ve said before, I think that part of this agenda is a desire by Republicans to recreate the Slavic menace for political advantage.