https://www.cnbc.com/2025/05/08/european-union-dispute-against-us-tariffs-world-trade-organization.html
> The European Union’s executive arm on Thursday said it would launch a dispute with the World Trade Organization over the U.S.’s “reciprocal” tariff policy and duties on cars and car parts.
> The European Commission further said it had launched a public consultation on countermeasures targeting U.S. imports worth 95 billion euros ($107.4 billion), to be implemented if a trade deal is not reached with Washington.
If they lose - which is likely - then it's equally likely the current regime will not take it well. They could just ignore it or they could withdraw from the WTO.
That sounds crazy but not really any more so than what has already occurred.
