European Union leaders gather on Monday to discuss how to bolster the continent's defences against Russia and how to handle U.S. President Donald Trump after his decision to impose tariffs on goods from Canada,

The EU leaders will be joined for lunch by NATO Secretary-General Mark Rutte, and he's been at pains to keep an open channel to Trump to persuade the U.S. president of the value of the Atlantic alliance — including by looking for ways to make the purchase of American weapons easier and faster for Europeans.

Denmark’s prime minister insists Greenland is not for sale and is calling for a robust show of support from her European Union partners should U.S.

The threat of a transatlantic trade war loomed large Monday over a gathering of European leaders aimed at boosting the continent's defences in the face of an aggressive Russia.