"It is not possible to speak seriously of a diplomatic process or of ceasefire negotiations while one country has brought without permission its armed forces de facto into another, while refusing formally to admit its involvement in the conflict."

"The destabilisation of Ukraine by Russia has continued for too long. Today, in addition to terrorists, clearly identifiable Russian military forces are operating in Eastern Ukraine. In other words, this is an undeclared war. Russia's actions are a clear violation of the United Nations Charter, the Helsinki Final Act and the Paris Charter. Western allies should agree on their part on the need to intervene in an even more determined way to protect Ukraine's sovereignty and territorial integrity," the President said.