I'm always very cautious about "brotherhood" concept. Frankly speaking, I don't need such relatives who grab my land and kill my people.

If 85 percent of Russians support the annexation of Crimea and the aggression against Ukraine, that is a very bad sign. The post-Soviet legacy is a heavy burden: Most Russians want to have the empire back. The only way it is possible to make that happen is to seize foreign territories.

It is positive that the United States and the European Union show a great deal of unity. Putin did not expect that. He thought he could split the EU, but the opposite happened: The EU imposed sanctions and even scaled them up. Of course we need more financial and military aid, the supply of lethal weapons is of crucial importance to us.

My aim is not to start a new offensive against Russian soldiers, but to deter Russia from further aggression. The thing is that the EU is always playing by the rules. Putin is always playing with the rules. At the beginning, many thought that, after annexing Crimea, the beast would calm down. But he continued by supporting the so-called separatists in eastern Ukraine.

Putin's survival depends on land grabs of foreign territories. He needs new annexations. The annexation of Crimea has gained him much applause at home. But that will not last forever. The Western sanctions are beginning to take hold and the people are suffering. In order to maintain his popularity, Putin has to commit further international crimes. Otherwise he will be dead politically.

The Russians will always find a pretext for their aggression. It was Putin who said in 2005 that the biggest geopolitical disaster of the last century was the collapse of the Soviet Union. Putin wants to bring Ukraine back into the Russian sphere of influence. That is why he tried everything in order to stop the EU-Ukraine Association Agreement.

The EU remains our dream. We must not give it up. Otherwise Putin would win. His goal is to undermine the EU. This is not only about a conflict between Russia and Ukraine. Russia is fighting against the West and its values. Therefore, the European project of Ukraine must not fail. We know that this aim requires successful reforms in Ukraine, even if they hurt now.