The donbas as an end itself, land bridge to crimea, whether he sees it as a base to press more towards the center of the country. and if he is pushed back, take the other scenario, whether he would then be tempted to use chemicals or nuclear. i think in the next month or next six weeks the personality of this will enter a new phase and define itself. if putin does badly, it is a third set of calculations. we will see this crisis essentially enter a fundamentally new phase over the next month to six weeks. by the way, at least 57 people killed in the train station attack in donetsk. there s another sign it could take a darker turn. russia s army has a new top commander who has a history of cruel attacks on civilians. general alexander devornikov