Splits within the EU on the relocation of 120,000 migrants have been further exposed as leaders hold an emergency meeting in Brussels.
Slovakia is launching a legal challenge to mandatory quotas that were passed in a majority vote on Tuesday.
Meanwhile, Hungary’s prime minister has proposed a radical budgetary revamp to raise funds.
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The summit will focus on tightening EU borders and aiding neighbors of Syria, from where many migrants come.
The talks were continuing well into the night, having started just after 19:00 Brussels time (17:00 GMT).
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