Boots on the ground from Germany, UK, France, et al., with a no-fly zone, appear to be the thing necessary to end the War on favorable terms.
I think the EU + UK need to be the construct for this given the US' support of Putin's agenda.
The US ceasing cyberops against Russia is going to make Russian offensive ops in the United States and the West including propaganda on our social media and attempts to attack our elections systems much harder to thwart.
The value of that to Putin/Musk/Trump will be enormous.
GOP representatives need to be shamed by the public. They may never vote to do anything wrt Trump's abuses of the post-WWII collective security structures but at a minimum the shame will be correctly applied to these weasels.