Borders are sacred unless the U.S. and NATO want to change them. From David Stockman at internationalman.com:

Well, the Trumpian box of chocolates continues to yield its surprises. Just as Forest Grump once averred.
We are referring to the news that Donald Trump may acknowledge the obvious in his peace negotiations with Putin. To wit, that the Russian-speaking, Russian-settled, centuries-long Russian territory of Crimea does not have to be returned to the Ukrainian interlopers as a condition of peace after all—the loud insistence since the Maidan coup of February 2014 by Zelensky, the Bidenestas and the neocon blob in Washington, London, Brussels and Berlin to the contrary notwithstanding.
The Trump administration is considering recognizing Ukraine’s Crimea region as Russian territory as part of any future agreement to end Moscow’s war on Kyiv, according to two people familiar with the matter.
Administration officials have also discussed the possibility of having the US urge the United Nations to do the same, according to both people. Such a request would align the Trump administration with the position of Russian President Vladimir Putin, who has long seen Crimea as his nation’s territory.
The administration’s previously unreported openness to those options comes as Trump prepares for a Tuesday call with Putin, with a potential 30-day ceasefire deal on the table. Trump told reporters Sunday evening aboard Air Force One that negotiators had already discussed “dividing up certain assets.”
So we are now finally getting to the meat of the matter. The thin fig-leaf justification for the Washington/NATO intervention in Ukraine all along has been some vague nonsense about the “sanctity of borders.”