Why is Ukrainian President Volodymyr Zelenskyy upset about the peace talks in Saudi Arabia?

Ukrainian President Volodymyr Zelenskyy is furious about being excluded from peace talks between U.S. and Russian officials held in Saudi Arabia concerning the war in Ukraine. These negotiations are taking place without any Ukrainian representatives present, despite directly addressing Ukraine's future. In response to this exclusion, Zelenskyy has canceled his scheduled trip to Saudi Arabia and instead voiced his criticism from Turkey. Russian diplomatic representatives confirmed that negotiations are indeed occurring between Russia and the United States about Ukraine but without Ukraine's participation, further highlighting the controversial nature of these talks.