There will be no war I guess. May be it will be war but media war.
Putin will just take back Russian territory that Khrushchev presented to Ukraine as gesture of friendship. Since there is no more friendship Crimea is going back to Russia.
PS: don't watch TV and read newspapers so often. There is a media war going on. There will a lot of provocations from West against Russia.
PSS: and yes of course situation in Kosovo was absolutely different