200 days after the war in Ukraine began comes news of an astonishing fightback - no less significant than the fightback that we saw North of the Ukrainian capital, Kyiv. Russian forces have withdrawn from key eastern towns as a rapid Ukrainian counter-attack makes further gains. Ukrainian officials said that troops entered Kupiansk, a vital eastern supply hub for Russian forces on Saturday and another key town, Bala-Klyia has been freed as well. Is this the beginning of the end of the Russian invasion?