More and more leaders around the world are slamming plans by Moscow-backed separatists in occupied areas of Ukraine to conduct referendums on joining Russia as soon as this week, saying the move would never be recognized. Moscow-backed separatists said on Tuesday that referendums would be staged in Luhansk, Donetsk, Kherson and Zaporizhzhya later this month. European Commission President Ursula von der Leyen was the latest to call Moscow’s plans to hold referendums in occupied parts of Ukrainian a clear violation of the United Nations Charter. “We will never recognize Russia’s attempt to legit…