"The forced exodus of populations from Darfur is continuing," he said.
"We're no longer in the situation we were in in 2004 when there were 10,000 deaths a month, but we are in a very bad situation which cannot last," he said.
Former president of Doctors Without Borders Rony Brauman said that "giving a misleading vision of the situation will lead to totally inappropriate propositions for a resolution" of the conflict.
"What is at stake today is not to send in an intervention force because there is no space for intervention, it is rather to incite the belligerents to regroup, to reorganize and to begin discussions," he said.
Sudan has bowed to months of pressure and agreed to the deployment of peacekeepers in Darfur under the UN and the African Union.
But Khartoum is boycotting today's Paris conference, angry that it was not consulted during preparations for the meeting and arguing that the French initiative will unnecessarily duplicate efforts by the UN and the African Union.
The African Union is also staying away, skeptical about the meeting's purpose and miffed at being kept out of the planning.