The United Nations Security Council took aim at Islamist militants in Iraq and Syria on Friday, blacklisting six people including the Islamic State spokesman and threatening sanctions against those who finance, recruit or supply weapons to the insurgents.

The 15-member council unanimously adopted a resolution that aims to weaken the Islamic State - an al-Qaida splinter group that has seized swaths of territory in Iraq and Syria and declared a caliphate - and al-Qaida's Syrian wing, Nusra Front.

Islamic State has long been blacklisted by the Security Council, while Nusra Front was added earlier this year. Both groups are designated under the UN al-Qaida sanctions regime.

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