"If we announce a government without a budget, without a safe zone (inside the country), it makes no sense," he said.
Another coalition vice president, Georges Sabra, told The Associated Press that it would take at least $500 million to set up a provisional government. "Otherwise, what can this government do?" he asked.
The Paris meeting was a run-up to Wednesday's donor conference in Kuwait.
In Beirut, U.N. humanitarian chief Valerie Amos said the situation in Syria was getting worse — that entire neighborhoods were being destroyed by the fighting.
Amos, who just returned from Syria, also reported human rights abuses.
"I listen to the women who talk about what happened to them, to their families, the sexual abuse they have faced," Amos told the AP in an interview.
"The indiscriminate shelling. The indiscriminate killing of people. This is a conflict that is happening essentially in towns and cities," she said.
International efforts to stop the bloodshed in Syria have repeatedly failed and both sides fighting in the civil war are convinced they can defeat the other on the battlefield. More than 500,000 Syrians have fled to neighboring countries to escape the fighting and hundreds of thousands of others are displaced within their homeland.
On Monday, activists said troops battled rebels in several towns and villages around Damascus, including in Daraya, Arbeen and Zabadani. The Britain-based Syrian Observatory for Human Rights said the regime's forces also shelled several of the capital's suburbs.
Some areas outside Damascus have been rebel strongholds since the uprising began. In recent months, the rebels have used them as a base from which they have been trying to push into central Damascus, the seat of Assad's power.
In the north, troops clashed with rebels in al-Hasaka province along Syria's border with Turkey, the Observatory said, adding that at least 10 rebels were killed in the fighting that erupted Sunday after the opposition fighters attacked a government checkpoint. Activists also reported fighting in the eastern Deir el-Zour province and in central Syria.
Ganley reported from Paris. Associated Press writer Bassem Mroue in Beirut contributed to this report.
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