KYIV, Ukraine — Ukrainian President Volodymyr Zelenskyy said Tuesday that Russian President Vladimir Putin wants Ukraine to withdraw from the remaining 30% of the Donetsk region that it controls as part of a ceasefire deal, a proposal the leader categorically rejected. Zelensky reiterated that Ukraine would not withdraw from territories it controls, saying that would be unconstitutional and would serve only as a springboard for a future Russian invasion. He said diplomatic discussions led by