The idea has gotten traction ahead of Saturday's EU summit as a way to allow the union's members to integrate at paces they are comfortable with. But it's a contentious issue.
As the world's elderly population grows, it is also becoming increasingly urban. But city living poses many challenges to older people. In Manchester, England, they're trying to fix that.
Prime Minister Renzi resigned after Italians rejected his constitutional reforms. Experts attribute that in part to Donald Trump's election – which could upend elections in France, Germany, and the Netherlands next.
EU leaders will have to recalibrate the bloc to stop a further breakup, not only by delivering concrete results like jobs to citizens, but also by making sure their case for unity is heard over growing nationalism.
Hundreds of thousands of immigrants, fleeing violence and poverty in Africa and the Middle East, are trying to find a better life in Europe – putting major strains on the EU and its member states.