Donald John Trump’s defense team today introduced, albeit gently, the notion that Ukraine might have joined its mortal enemy Russia in attacking our 2016 presidential election.

Trump is on trial for his job in the U.S. Senate. The House of Reps’ managers gave it their best shot in their opening argument. Now it’s Trump’s turn.

So what did the legal eagles representing the current president offer? They suggested that Ukraine might have attacked the U.S. election in 2016. But wait!

Russia and Ukraine are at war. Russia re-annexed Crimea, a part of Ukraine. Russia-backed rebels are fighting Ukraine government forces. Thousands of people have been killed.

An alleged Ukrainian attack on our election, of course, is a Russian propaganda talking point, which Republicans in the Senate and House have been parroting. Moreover, U.S. intelligence experts have concluded unanimously that Russia acted alone in attacking our system in 2016, even though Donald Trump keeps denying their findings and disparaging their expertise.

I have to ask: Does it make any semblance of sense for Ukraine and Russia to — and pardon the expression — “collude” to interfere together to influence the outcome of a U.S. presidential election?

My head is spinning.