So putting on my thinking cap, Trump made this deal with Putin on diesel fuel because he is concerned about the American trucking industry and making sure that prices don't go up because of higher costs of domestic diesel fuel.
Trump is willing to make a deal with the devil to be in the good graces with voters in the upcoming midterm elections.
On the other hand, he is willing to drag Zelensky over the 'coals' even though Zelensky is trying to save his country from Putin's Russia.
So he has to decide between maintaining a steady level of diesel fuel costs in America—or the survival of Ukraine.
If I was Ukrainian, I wouldn't worry about diesel fuel costs in the US.