Note the article says which bit of the treaty it's talking about (the Northern Ireland protocol). If he'd written "I've heard from legal advisers that they've

Note the article says which bit of the treaty it's talking about (the Northern Ireland protocol). If he'd written "I've heard from legal advisers that they've been asked to provide a justification for breaking part of a treaty but they don't want me to say which", I wouldn't put much weight on that turning out to be true.