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.
Denis Voronenkov, a key witness in a Ukrainian treason case against pro-Russia former president Viktor Yanukovich, was shot by an unidentified assailant in central Kiev on Thursday. His death fueled tensions between the two countries.
Eight suspects have been arrested in connection with the attack. Londoners, meanwhile, are moving forward in an effort to resume normality. ISIS claims responsibility.
A counterterrorism investigation into the incident is already under way.
Germany will deport German-born children of immigrants, following concerns that they may have been considering terrorist activity, a court ruled Tuesday.
Co-opting of far-right sentiments, combined with an aggressive police dispersal of a protest by Turkish-Dutch, could have buoyed the centrist candidate. But European leaders are very relieved Dutch Prime Minister Mark Rutte won reelection.
The Netherlands is one of Europe's most liberal countries – and home to one of its most ardently anti-Islam politicians, Geert Wilders, who could capture the most seats in March 15 elections.
A German court dismissed a lawsuit from Anas Modamani, who wanted Facebook to identify and delete posts falsely linking him to high-profile crimes committed by migrants.
Many of the attacks were prevented using information provided by the public, said Britain's most senior antiterrorism official on Monday.
Janusz Korwin-Mikke's comments shocked the European Parliament, but may hold hints of the challenges facing the body.