"The results of this step [Brexit] could be really gigantic," Sobotka told journalists. "In this case, we can expect debates on EU exit here in a couple of years."
The prime minister warned that it was high time that the ruling Social Democratic Party started explaining all benefits of EU membership to Czech citizens before separatist radicals won them over.
Anti-EU sentiment has been rife in the Eastern European country after its row with Brussels over a plan to resettle migrants fleeing violence and poverty in the Middle East and Central Asia.
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