A source familiar with a call between Donald Trump and Volodymyr Zelensky told Axios that Trump repeatedly urged Zelensky to stop Ukrainian strikes on Russian oil refineries, stating they were increasing global diesel prices. The word 'diesel' was mentioned multiple times during the conversation, according to the source.

The source, who spoke to Axios on the condition of anonymity, indicated that Trump's primary concern during the call was the impact of these strikes on global diesel prices.