The United States warns France and Germany that it could impose an export ban on diesel unless they release their available diesel reserves. Multiple reports, citing U.S. communications and officials, say the warning is tied to concerns about diesel supply and pricing.

The reports describe the message as being delivered privately to the two countries, with U.S. officials framing the action as conditional. According to the available account from one outlet, the U.S. tells France and Germany to make diesel stocks available to help ease supply constraints; otherwise, the U.S. would restrict exports.

While the outlet headlines emphasize the “release diesel reserves” demand and the threat of a ban, the specific details of how much diesel would need to be released, the timing, and the precise legal or administrative mechanism for an export restriction are not fully stated in the provided excerpts. The overall storyline is consistent across sources: a U.S. warning to two European countries tied to diesel stock releases and potential export controls.