Russia is stuck in the past while other nations have moved on.
Many European, Asian, and South American countries have put war aside in favor of economic development. They have dealt successfully with the "US" versus "Them" paradigm and focused on rebuilding their economies. Germany, for instance, after two costly, world wars, has built an economy that is the envy of the world, with Poland, Hungary, China, Japan, South Korea, Vietnam, and Brazil not far behind.
Russia, on the other hand, still harbors a distrust of the United States and Europe. According to military and State Department analysts, it stems from former Soviet Bloc nations being inducted into N.A.T.O., among other concerns, after they gained independence.
Meanwhile, Russia's economy takes a big hit as Western countries impose hard-hitting sanctions for its involvement in the Ukrainian revolution.