REPUBLIKA.CO.ID, AMSTERDAM - Syria had given up less than 5 percent of its chemical weapons arsenal and would miss next week's deadline to send all toxic agents abroad for destruction, sources familiar with the matter said on Wednesday.

The deliveries, in two shipments this month to the northern Syrian port of Latakia, totalled 4.1 percent of the roughly 1,300 tonnes of toxic agents reported by Damascus to the Organisation for the Prohibition of Chemical Weapons (OPCW), said the sources, who spoke on condition of anonymity.

"It's not enough and there is no sign of more," one source briefed on the situation said.

The internationally backed operation, overseen by a joint OPCW-United Nations mission, is now 6-8 weeks behind schedule. Damascus needs to show it is still serious about relinquishing its chemical weapons, the sources told Reuters.

The issue was to be discussed at a meeting of the OPCW's executive council on Thursday in The Hague, a senior US State Department official told Reuters. The meeting will focus on the lack of progress and confirm that no more than 5 percent of the chemical weapons material has been removed from Syria, the official said, speaking on condition of anonymity.

Failure to eliminate its chemical weapons could expose Syria to sanctions, although these would have to be supported in the UN Security Council by Russia and China, which have so far refused to back such measures against President Bashar al-Assad.

The deal under which Syria undertook to eliminate its chemical arsenal stopped the United States and its allies from launching bombing raids to punish Assad for a chemical attack last August and made clear the limits to international action against him. UN Secretary-General Ban Ki-moon suggested in a report to the Security Council this week that shipments had been unnecessarily delayed and urged the Syrian government to speed up the process.

US Secretary of State John Kerry urged his Russian counterpart Sergei Lavrov during a phone call on Wednesday to "press the (Syrian) regime to move forward with the necessary steps on the chemical weapons process," State Department spokeswoman Jen Psaki told a briefing.

A Western diplomat said the Syrian government is "teasing us" by dragging its heels but doing enough to avoid being declared in non-compliance with its obligation to destroy its chemical weapons program.

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