UPDATE 1913 GMT:Ukraine President Volodymyr Zelensky says forces have liberated 160 square km (62 square miles) in their “counteroffensive operation” in the Donetsk region in eastern Ukraine. UPDATE 0727 GMT:At least three civilians have been killed and 22 injured by Russian attacks across Ukraine over the past day. In the Poltava region in south-central Ukraine, the Russian attacked railway infrastructure and cut power temporarily in some areas. ORIGINAL ENTRY: President Volodymyr Zelensky has outlined the meaning of “security guarantees” for Ukraine to ensure lasting protection from Russia’s invasion. Zelensky noted that the cost of facing the invasion is around $120 billion per year, with Ukraine covering half.