The West will never invade russia, russians themselves will eventually topple putin's oligarchy goverment.The Russians look at it differently. For many Westerners nuclear weapons are obsolete and dangerous relics of the past epoch. For the modern Russians nuclear weapons (and decisiveness to use them under any circumstances) are the only things that stay between them and a full scale western invasion. They (most of them) love it, the simplest way to achieve some popularity points is to suggest nuke the USA.