The mood in Brussels is a mixture of determination and deep concern. There is, finally, a realisation that President Trump isn't bluffing in his desire to "own" Greenland and a recognition that diplomacy with the erratic US leader might not work this time. There is also unanimous agreement in European capitals that a forced seizure of Greenland cannot be allowed and the tariffs announced on Saturday against eight countries, including the UK, are wrong. This is fast becoming the biggest