Quotes from the news wire:
And the final thing is the internationalization of the terrorism on the part of ISIS. And now the United States is very much concerned about eliminating ISIS ... and that means you have to end the Syrian civil war to do this. as far as I know, the only Plan B available is return to war -- and to (an) even worse war than we've had so far.
The decision on whether they will be on Monday or slightly later will be taken in the next few days, depending on what is happening on the ground, we don't want discussions in Geneva to become a discussion about infringements or not of the ceasefire, we want them to actually address the core of everything.