This is pure PR. Russia doesn't refine enough to export. If we import diesel that was being sold elsewhere, it doesn't lower our price. It's set on the global market. When US refiners sell diesel in the US it's at the global price. Importing doesn't lower the price.
@besmarteasy.bsky.socialExactly. You know what country has a surplus of diesel? Canada. Which begs the question- why travel across the world to procure an amount of fuel that will only last a day- ish when we can get it next door?