Russian Foreign Minister Sergei Lavrov dismissed the "absurdity" of EU complaints over a travel ban imposed by Moscow on 89 Europeans over the Ukraine crisis.
Germany and France urged the EU to find a fairer way to admit and distribute asylum seekers, as their leaders met the European Commission chief in Berlin.
Moscow has issued a blacklist of European Union politicians barred from Russia in response to EU sanctions over Crimea and Ukraine.
German Chancellor Angela Merkel vowed to help keep Britain in the EU by working on reforms with Prime Minister David Cameron.
Japan and the European Union will hold summit talks later, with a long-stalled Free Trade Agreement expected to be on the agenda.
British Prime Minister David Cameron prepared Friday to lobby German Chancellor Angela Merkel for "flexible and imaginative" EU reforms.
French Foreign Minister Laurent Fabius said a British referendum on whether to leave the EU was "very risky", ahead of a visit by Prime Minister David Cameron to Paris.
Voters will be asked "Should the United Kingdom remain a member of the European Union?" in a referendum to be held by 2017.
EU foreign policy chief Federica Mogherini called on Israel and the Palestinians to resume peace negotiations, saying the situation on the ground was "not sustainable."
British voters will be asked to vote "Yes" or "No" on remaining in the European Union in a referendum to be held by the end of 2017.
Europe must do more to help migrants crossing the Mediterranean, UN chief Ban Ki-moon said ahead of a visit to Brussels.
Most European Union citizens who are resident in Britain will not be able to vote in a referendum on its membership of the bloc.
The EU urged Burundi's government to prosecute the killers of an opposition leader and prevent the violence in the central African country from worsening.
German Chancellor Angela Merkel told the EU's eastern partners not to expect too much of the bloc and warned Russia to mend its ways over Ukraineю
Behind the kitsch, glitz and smoke machines of the Eurovision Song Contest -- hosted by Vienna -- hide more serious international geopolitical tensions.
Georgian President Giorgi Margvelashvili has warned European Union leaders against letting Russian aggression in Ukraine undermine the bloc's project of building closer links with ex-Soviet nations.
Hungarian Prime Minister Viktor Orban angered EU lawmakers and officials by insisting that Budapest had the right to debate closing the door to migrants.
French President Francois Hollande said that quotas for migrants in Europe were "out of the question" but said he supported a better distribution of refugees between EU countries.
The European Union denounced Sunday the death sentence handed down against Egypt's ousted president Mohamed Morsi and at least 100 others.
Greece's left-wing government will not abandon its refusal to cut salaries and pensions in tough talks with its EU-IMF creditors.