Mind you Crimea asked for help (and today some other states also asked for help, and passed laws authorizing referendums to ask their citizens if they want to l

Mind you Crimea asked for help (and today some other states also asked for help, and passed laws authorizing referendums to ask their citizens if they want to leave Ukraine) Also Russia still consider Yanuk as the president, since he was physically kicked out (the day he fled some Right-Sector people were actually trying to kill him, his car for example ended full of bullet holes), and they consider that since Yanuk authorized they to get inside to get rid of the new government (that in eyes of Russia is illegal), then it is not a invasion, or a act of war. Of course that is just the theoretical explanation, if Putin REALLY believe that stuff or not, is another thing entirely.