Europe Returns Focus to Ukraine After Fractious Week With Trump

Europe is ready to get back to work with the US, wary, frustrated and knowing it can’t trust an ally it’s relied on for decades.

With Donald Trump’s threats to seize Greenland off for now, European Union leaders at an emergency summit in Brussels Thursday said the bloc should now return to a to-do list that was already long before the US president nearly brought the transatlantic alliance to its knees.

His latest demands scarred the relationship, they said. But, practically speaking, Europe can’t ditch the US economically or otherwise. It still needs US trade, financial flows, energy, protection ...