Nor ours, today. But nations don't base their future security solely upon current events. Governments change. Loyalties change. Alliances change. Like all prudent people and businesses, governments reserve to potential of what could go wrong.
And lest we think any person or nation has a lock on virtue, let him or it gain absolute, unchecked power and see what ensues. NATO had that kind of power during the 1990s and most of the 2000s, and transformed itself from a defensive stance against Soviet invasion to an active encirclement of Russia. Putin would have been derelict to let that continue unchecked, and thwarted us in Georgia in 2008 and now in Ukraine. We've become so accustomed to having our way that we've forgotten both sides have a say in such matters.
Russians are paranoid, being invaded by Napoleon, the Kaiser and Hitler will tend to do that.
You make a good point, and I don’t disagree that our country has over-reached many times lately into other countries affairs. I don’t particularly like it.