For eight years Barack Obama and Europe's leaders have worked in relative harmony on most of the world's major issues.
On Friday, they gathered for one final time in Berlin to thank Obama and privately wonder what may be coming next.
ITV News Europe Editor James Mates reports.
Addressing a joint press briefing in Berlin, the Prime Minister insisted Article 50 would be invoked by the end of March next year.Read the full story ›
Barack Obama has arrived in Berlin where he is to hold talks with European leaders, among them Prime Minister Theresa May.
The outgoing US president is on a farewell trip to Europe amid uncertainty and nervousness among European leaders over the election of his successor Donald Trump.
Mr Obama will hold talks with Ms May and the leaders of Germany, France, Italy and Spain.
Ahead of the Berlin leg of his trip, Mr Obama was in Greece.
Theresa May has arrived for talks with European leaders and outgoing US president Barack Obama in Berlin.
The prime minister was greeted by Angela Merkel, the German chancellor, who is hosting the talks.
European leaders are meeting to discuss a range of global issues, in particular the threat posed by so-called Islamic State fighters fleeing their Middle East strongholds.
But May and the leaders of Germany, France, Italy and Spain are also meeting Mr Obama, whose 'farewell' visit to Europe visit comes amid uncertainty and nervousness among European leaders over the election of Donald Trump.
The outgoing US president will hold a meeting with Mrs May, as well as the leaders of Germany, France, Italy and Spain later today.Read the full story ›
A teenager dressed as a "killer clown" and brandishing a hammer has been stabbed after attempting to scare a group of young people.Read the full story ›
Police were summoned to an annual shareholder meeting in Berlin following a confrontation over buffet sausages between a man and woman.Read the full story ›
A suitcase is being investigated at the US Embassy in Berlin after a man held at the building claimed he was trying to take a bomb inside.Read the full story ›
Germany celebrated the new year with a dazzling fireworks display over the Brandenburg Gate in Berlin.