Ukrainian MP and leader of the European Solidarity party Petro Poroshenko is convinced that the war with Russia can be ended quickly if unity within NATO and the EU is ensured, the political force said on its website on Thursday. "Is there an opportunity to end the war quickly? I am sure there is. What do we need for this? Several prerequisites. First, we need transatlantic unity. We need unity with the United States and unity within NATO... Point number two is unity within the European Union.