New US and coalition airstrikes have targeted ISIS-held oil refineries in Syria.
The raids killed 14 ISIS fighters and five civilians in eastern Syria, activists said.
The US military said the refineries generated as much as $2 million per day in revenue for ISIS.
President Barack Obama has vowed to dismantle the ISIS “network of death”.
ISIS has seized large areas of Syria and Iraq in recent months and controls several oilfields. Sales of smuggled crude oil have helped finance its offensive in both countries.
The US has launched nearly 200 air strikes against the militants in Iraq since August and expanded the operation against ISIS to Syria on September 22.
On September 24, the UN Security Council adopted a binding resolution compelling states to prevent their nationals joining jihadists in Iraq and Syria.
New US and coalition airstrikes have targeted ISIS-held oil refineries in Syria (photo Reuters)
President Barack Obama chaired the session and said nations must prevent the recruitment and financing of foreign fighters.
The US military said the fresh air strikes, using fighter jets and drones, hit “small-scale” refineries that were producing “between 300-500 barrels of refined petroleum per day”.
“We are still assessing the outcome of the attack on the refineries, but have initial indications that the strikes were successful,” the US Central Command said in a statement.
The UK-based Syrian Observatory for Human Rights, an activist group that monitors the Syrian conflict, said the strikes killed 14 ISIS fighters in Deir al-Zour and five civilians in Hassakeh.
The US says more than 40 countries have offered to join the anti-ISIS coalition.
France said its fighter jets were carrying out air strikes in Iraq again on Thursday, a day after the beheading of a French hostage in Algeria by an IS-linked jihadist group.
The French military has been carrying out air strikes in Iraq since last week but has not taken part in anti-IS operations in Syria.
On September 24, the Dutch government said it was deploying six F-16 fighter to join the US-led air campaign.
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Libyan rebels, who seized oil ports in the country’s eastern region, say they have loaded oil on to a North Korean-flagged tanker.
The Morning Glory docked at Sidra port earlier on Saturday, after a failed attempt to dock on Tuesday.
“We started exporting oil. This is our first shipment,” a rebel spokesman said.
The rebels demand more autonomy – and oil wealth – for Libya’s east.
Analysts have said it is unlikely the ship is owned or controlled by Pyongyang.
Libya’s state-owned National Oil Corp (NOC) had warned tankers against approaching the port, and two others in Libya’s volatile east that are also controlled by armed groups.
It is not the first attempt to ship oil from the rebel-controlled port.
Rebels who seized oil ports in eastern Libya say they have loaded oil on to a North Korean-flagged tanker
On Monday, the Libyan navy ship Ibn Auf fired warning shots at a Maltese-flagged oil tanker to prevent it from docking and loading oil.
The owners of the ship complained it was fired on in international waters.
Libya’s government has tried to end a wave of protests at oil fields and ports, which have slashed vital oil revenues, but there has been little progress in indirect talks between the government and former militia leader Ibrahim Jathran, now leading the protests.
His men seized three eastern ports last year, which previously accounted for 600,000 barrels of oil a day.
Libya is struggling with armed groups and tribesmen who helped topple Muammar Gaddafi in 2011 but who have kept their weapons.
Ibrahim Jathran’s demands include an independent commission representing the three regions of Libya. He wants the commission to supervise the sale of oil and ensure the east gets a fair share of the revenue.
The government has so far not acted on threats to retake Sidra, or other rebel-controlled ports.
Libya’s oil output has slowed to a trickle since the protests started in July last year, depriving the OPEC producer of its main budget source.