Re: I was fine with the first indictment
I think that's the idea.
Trump doesn't really want Assange on trial in the US, no telling what sort of embarrassments that might lead to. What he wants is to pose as a tough guy for his followers, provoke the press into attacking him, maybe provoke Congress into impeaching him, and provoke the Europeans into defying him. All of which will play directly to his standard speech about how it's America against the world and no one but him will stand up to them.
Assange himself is irrelevant, nobody except Assange really cares what happens to him. He's become a prop now. Potentially useful for all sorts of people and purposes, but only for what their posturing says to their own voters.