21."We are going to engage in making it (the war) end in a way that is sustainable, meaning we don't just want the conflict to end and then restart in two, three, or four years down the road," the recently confirmed top U.S. diplomat said on the CBS Mornings program."We want to bring stability."U.S. President Donald Trump, who took office on Jan. 20, vowed to bring Kyiv and Moscow to the negotiating table and end the full-scale war nearing its third-year anniversary. He has revealed few details on how he plans to achieve that goal, though Rubio repeatedly said that both Ukraine and Russia will have to make concessions."It is a stalemate. It's a war that was started by Russia, but it is now a stalemate, a protracted bloody conflict," Rubio said on CBS Mornings, adding that the war has been "incredibly destructive" for both Ukraine and Russia.The secretary of state nevertheless said that Ukraine "is paying the biggest price of all to its energy infrastructure, to the people, the lives that are lost, to the millions of Ukrainians that have had to leave their countries and are living overseas.