| UPDATED: 13:44, Thu, Feb 4, 2021 Link copied Sign up for our columnists plus the most commented stories driving conversation SUBSCRIBE Invalid email When you subscribe we will use the information you provide to send you these newsletters. Sometimes they'll include recommendations for other related newsletters or services we offer. Our Privacy Notice explains more about how we use your data, and your rights. You can unsubscribe at any time. European Commission President Ursula von der Leyen decision to threaten to trigger Article 16 of the Brexit deal has left "frustration" and "head-scr...