Ukrainian President Volodymyr Zelensky has decried what he called the “insanity” of the Russian leadership and warned of possible new wars in the world. “Because of the insanity of Russian leadership, all nations around the world are facing a period of uncertainty and insecurity,” Zelensky said in his evening video message broadcast in Kiev on Friday. “The world is becoming increasingly aware that more wars may be on the horizon,” Zelensky also wrote on the social network X, the former Twitter. “But we have the strength to stop this. We have the strength to preserve normal life. The world has …