This statement is not in any way surprising. The Russians, and the Soviet Union before them, have always seen NATO as a spear pointed at them.
That is why they demanded, and got, promises that following the reunification of Germany that there would be no eastward expansion of NATO.
Unfortunately, this promise was promptly ignored, and countries have been added to NATO with abandon, and the Russians see this as a ring of steel intended to threaten and pacify them.
There is nothing that has contributed to the bellicose nature of current Russian foreign policy as much. They are completely justified in seeing this as a threat and a provocation.