When MOST of the world has smaller armies than Russia and is in constant fear of being invaded by another country....what Russia has done doesn't go unnoticed. You pay attention to predators....not so much the acts of violence that the prey commits.
No one needs to worry about being invaded by the US, other than Iran, and Afghanistan, oh and Iraq and Syria, and of course, Vietnam, and Nicaragua, and don't forget Pakistan, Yemen, Somalia and Libya, oh and El Salvador, Cuba, and I suppose you could include China in this as well, it has only been 90 years, but then that would also include Honduras, Panama, Philippines, Lebanon, Haiti, Congo, Laos, Ecuador, Brazil, Indonesia, Dominican Republic, Ghana, Cambodia, Oman, Angola, Grenada, Bolivia, Liberia, Somalia, Yugoslavia, Bosnia, Croatia, Zaire, Sudan, and Macedonia. Everyone else can sleep tight.