The commission chief insists he is still committed to migrant quotas and accuses some member states of failing on migration.
Balkan leaders said in New York there would be no repetition of last year's mass influx of refugees, as the EU prepares to launch a new border force to keep people out.
Hungary has played down comments from Slovakia's PM that the eastern EU states would veto any UK deal that does not guarantee the rights of their nationals in Britain.
News in Brief
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- Spain's Socialist party in turmoil
- Catalonia leader wants independence vote September 2017
- EU leaders to attend Peres funeral
- German/UK stock merger probed
- Germany has no plans for Deutsche Bank rescue
- Evidence mounts of Russian role in MH17 disaster
- Four EU states did not relocate a single refugee
German chancellor said solving refugee crisis not as easy as her slogan, “We can do it”, had suggested, but rejected a migration cap despite a new election defeat.
Solidarity is "from the heart", relocation of asylum seekers is a legal obligation, the EU executive says.
Reacting to Bratislava talks, Britain has said it would veto the creation of EU military capabilities so long as it remained a member of Europe.
The Slovak PM, whose country holds the EU's presidency, said migrant quotas are now off the table and member states can refuse to take in refugees.
Hungarians are expected to reject mandatory quotas of asylum seekers in PM Orban's migration referendum, as hearts harden in a cynical campaign.
If Hungarians reject the EU's migrant quota plans in a referendum, Orban might push to change EU treaties, according to reports.
Column / Brexit Briefing
Conservatives Brexiteers and Labour leadership are increasingly leaning away from the Norwegian-style deal with the EU, towards a UK-specific arrangement.
A French woman who participated in a broadcast event with the commission president claims she felt threatened not to ask about lobbies and tax avoidance.
German leader Angela Merkel’s party has suffered a further setback in local elections, while the anti-EU AfD party continued to make gains.
The 27 EU leaders agreed on a non-binding roadmap to regain momentum after Brexit, but despite the effort to show unity, Italy's Renzi veered off course.
MEP Diane James has won the eurosceptic party's leadership. She will try to influence Brexit talks, while her predecessor Nigel Farage will keep an active role.
Tusk said in Bratislava it would be "easier than you expect" to heal the EU's divisions, but for some leaders the post-Brexit talks are a "moment of truth" for the Union.
The EU commission president may be right that Brexit is not an existential challenge to the EU, but rifts with the EU council chief over how to handle the divorce talks may well be.
In Bratislava, leaders will decide how to reform the EU in reaction to Brexit. The Czech PM says, in a comment for EUobserver, that the future EU must get closer to its citizens.
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- Greek MPs approve water and electricity privatisation
Twenty seven EU leaders will in Bratislava try to agree on a roadmap on how to fix the EU after Brexit. Leaders will try to find common ground, but divisions run deep.
If Juncker was betting that his come-back speech alone would mark a come back, he might well lose.
Mainstream parties defended Juncker's ideas on how to win back people's trust, but populists blamed the EU Comission chief for dishing up "more of the same".
The EU Commission chief warned Europe is more divided than ever before, but that Brexit does not mean it is falling apart. He also promised free wifi, an EU army of sorts, and more investments.
Column / Brexit Briefing
The former prime minister's personal dislike of the EU was clear to see at any summit. He did not want Brexit, but his sloppy handling of Brussels made it almost inevitable.
Juncker will aim to please southern states by talk of investment, and others by talk of deeper security cooperation in his first big speech since the Brexit vote.
German, Italian, and Polish MEPs top a ranking of the most influential euro-deputies compiled by VoteWatch Europe.
EU budget commissioner Kristalina Georgieva is increasingly emerging as Europe's top candidate for the prestigious UN secretary general post.
Far-right candidate Norbert Hofer has a narrow lead in polls, but the latest delay could see the numbers lurch either way.
Foreign minister Jean Asselborn says excluding Hungary at least temporarily is "the only possibility" to preserve EU values.
British diplomat put forward "intelligent" security plan to a half-empty EP committee, but refused to speculate on Brexit in his three-hour hearing.
Hundreds of thousands marched on Sunday for Catalonia's national day. The local government, while struggling to pass its budget, is trying to raise its profile abroad.
MEPs are worried about the human rights situation in Poland. But what do they hope to gain from next week's plenary debate?
The US company is accused of censorship after it deleted an iconic Vietnam War photo and removed criticism it received over the decision. Norway's prime minister was not spared.