“Asset” in the officer/agent/asset trio of terms for relations to foreign intel/influence operations does not denote ownership, and refers to people who provide access and information or other support without necessarily having the kind of formal control relationship and commitment that makes an agent. (One analogy I've seen used is with romantic relationships, where an agent is like a committed partner and a asset is in a friend-with-benefits relationship.)
If you don't understand what it means, how can you know you disagree with it?
Just some quick examples:
* Recommending American de-nuclearization while stating that Russia is no longer a threat to America.
* Dismantling cybersecurity programs that are intended to identify and counter Russian hacking efforts.
* Peace negotiations with Ukraine and Russia that require no concessions made by Russia.
All of these actions are being taken despite polling poorly with Americans. You could say that none of these definitively proves that there is Russian leverage over Trump and you would be technically correct. The flip side of that coin is that you also can't explain why these actions are in America's best interest.
I'm not saying that you're wrong, but that is an awful lot of accidental benefit for Russia and precious few others. Far too much for my tastes.
Do you mean political rivals or do you have actual evidence the Democratic party is trying to kill him.
Is it really inexplicable though? Or is it more plausible that you simply don't understand the motives, and probably haven't really tried?
I do think another plausible explanation is that Trump has dictator envy and idolizes Putin, and so he tries to emulate him and do things that would make him happy.
But it's not clear how far something like that would go. I think it's reasonable to suspect that Putin has something that he can use as leverage over Trump, but that's of course near-impossible to prove at this point.
Why don't you explain it to the rest of the class?