Story highlights The High Negotiations Committee plans to meet the envoy Sunday

'We are willing to do anything' to end the war, an opposition spokesman says

A third round of peace talks are taking place in Geneva

Geneva, Switzerland (CNN) Representatives of the main Syrian opposition group will meet with the United Nations' special envoy on Sunday, a member of the group said, amid a third round of peace talks aimed at ending the war.

"We are here, we are ready to make this a success, we are ready to start negotiations," Salim al-Muslat, a spokesman for the High Negotiations Committee, said Saturday.

U.N. special envoy Staffan de Mistura has already met with representatives of the Syrian government, but he said Friday in Geneva that any substantive talks would have to wait until HNC members arrived.

De Mistura had urged the opposition to come regardless of whether the Syrian government met its demand that the government fulfill conditions laid out in a U.N. Security Council resolution on the peace process.

"At least we should see something on the ground there in Syria," al-Muslat said. "We should really stop these massacres against our people. So please help us, save our children, save the many children of Syria. Then we are willing to do anything that will put an end to this war."

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