As the Pentagon's favorite think tank calls for a swift end to the Ukraine conflict, is the mood shifting in Washington?

The RAND Corporation, a highly influential elite national security think tank funded directly by the Pentagon, has published a landmark report stating that prolonging the proxy war is actively harming the US and its allies and warning Washington that it should avoid “a protracted conflict” in Ukraine.

https://www.rt.com/news/570618-rand-came-up-with-solution/

Rand Report:
Avoiding a Long War U.S. Policy and the Trajectory of the Russia-Ukraine Conflict

The concluding paragraphs are a bit of a downer:

"A dramatic, overnight shift in U.S. policy is politically impossible—both domestically and with allies—and would be unwise in any case. But developing these instruments now and socializing them with Ukraine and with U.S. allies might help catalyze the eventual start of a process that could bring this war to a negotiated end in a time frame that would serve U.S. interests. The alternative is a long war that poses major challenges for the United States, Ukraine, and the rest of the world."

https://www.rand.org/content/dam/rand/pubs/perspectives/PEA2500/PEA2510-1/RAND_PEA2510-1.pdf (32 pages)