The prime minister of Denmark has promised a nationwide crackdown on "parallel societies", where migrants live off the state and make no effort to integrate.

"Denmark should be open to those who can and will [work]," Lars Løkke Rasmussen declared, adding that the nation's borders "should be hermetically sealed for those who do not want to", local media reported.

Speaking at the Venstre Party's national assembly on Saturday, the prime minister said that whilst the government has made great strides in stemming mass migration, the country must now work to tackle the existence of ghettos in which residents reject Danish values and "neither respect nor participate in our democracy".

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