I absolutely agree with that statement. He takes advantage of there being weaknesses. The time right after the president of Ukraine, Yanukovych, fled and the parliament was looking for a democratic resolution to the prevailing vacuum, was the particular time when Vladimir Putin struck, both in Crimea and in the Donbass.
Let's also not forget, Mr. Bezan, that Russia has not declared war against Ukraine. Vladimir Putin denies to his own people that he is financing and operating a war in Ukraine, because that has the potential to be very unpopular. It is well documented by such NGOs as the Atlantic Council, Freedom House, and others that Russian soldiers who are dying in the Donbass area are not even being given proper burials, because they're trying to avoid this becoming another Afghanistan for them. There are also Russian soldiers dying in the Donbass as they've been sent to take more territory.