"We want to do some persuading here and clear away the last obstacles that might exist — at least try to do that," Steinmeier said.
Turkish Foreign Minister Ahmet Davutoglu said the coalition had, in fact, agreed last fall to attend the meeting, but since then has reconsidered as the result of renewed violence and brutality he blamed on the regime.
"We are working very hard, and (al-Jarba) is working very hard to convince the Syrian National Coalition — all of the members and also on the ground —to participate," Davutoglu said.
In Damascus, United Nations humanitarian chief Valerie Amos called on the international community to do more to help Syrians suffering from the conflict. And Qatari Foreign Minister Khalid bin Mohammed al-Attiyah in Paris said none of the opposition's allies had done enough.