If it happens I predict:<p>Lots of sanctions, fear, anger, and more economic troubles everywhere. Increased food and fuel costs.<p>Refugees flood out of Ukraine into nearby countries. Humanitarian crisis and calls for international aid / assistance.<p>More COVID outbreaks due to refugees and bad living conditions.<p>Other eastern European nations will be interested in joining NATO or some kind of security pact so the same thing does not happen to them.<p>In short, bad for everyone.