In order for negotiations to conclude, both sides have to agree. The US isn’t one of those sides. In 2022 there were a lot of negotiations between Russia and Ukraine, but they were so far from agreeing that they realized there’s no use in negotiating for a long time.

There’s nothing Biden could have done, apart from sending even more aid, to help the situation. And now with Trump chatting with Putin, there’s hardly any difference. No deal will be reached without Ukraine agreeing, which they’re clearly not.

The only result from this will likely be that the US completely stops all support, forcing the EU to send even more aid, and the war will drag on a lot longer, probably years.

Here’s a good video that talks more about the power of the rich in SK: https://www.youtube.com/watch?v=iRgp8oBiAmw

Depends on the size of the area you’re considering. In some area, one nuke would blow up 100% of the mines. But in some other, larger, area, it would only blow up 50%.

But to be fair, using nukes to clear mines is probably one of the least effective methods considering all the collateral damage on villages, fields and nature.