The EU leaders have held an emergency meeting over Trump’s tariffs threat over Greenland. After the meeting was concluded the EU officials have stated that the EU would respond with tariffs of their own and some have even suggested the Anti-Coercion Instrument, a tool which hasn’t been used before.
https://www.youtube.com/watch?v=qIa8DO-9WyE
Trade Tensions Escalate: EU Reacts to Trump Tariffs, Canada in the Spotlight