Those four--there were actually a few more--were part of a list made public by the Trump people.
And we do trade with Russia. I don't know if we ever "traded" with Cuba. But there was a time in which things loosened up. And they do make stuff. After all, Cuba has normal relations with the rest of the world.
As for Russia, not a lot, but...
U.S. total goods trade with Russia were an estimated $3.5 billion in 2024. U.S. goods exports to Russia in 2024 were $526.1 million, down 12.3 percent ($73.5 million) from 2023. U.S. goods imports from Russia totaled $3.0 billion in 2024, down 34.2 percent ($1.6 billion) from 2023. The U.S. goods trade deficit with Russia was $2.5 billion in 2024, a 37.5 percent decrease ($1.5 billion) over 2023.
But wait, there's MORE!! Didn't I tell you just a few nights ago that Jared Kushner had bought property on the Albanian coast? This article makes it seem the deal is new, but the locals have been talking about his and Ivanka's purchase since last year.
Sold to the Trump family: one of the last undeveloped islands in the Mediterranean
Ivanka Trump and her husband Jared Kushner have spent more than $1bn on an Albanian island that will be a luxury resort – once the unexploded ordnance has been removed