Its not hard to block the river, isn't it. That is why I said "unrestricted". And if you think that international laws will prevent it, well Ukraine get rid of

Its not hard to block the river, isn't it. That is why I said "unrestricted". And if you think that international laws will prevent it, well Ukraine get rid of nuclear weapons and got GUARANTEES by Russia, US, China, France and few more countries they will protect it in case of any kind of aggression.