I can't say at this point how it's going to end up, ... difficult but not insurmountable.

a good effort to try to bridge the remaining differences, which I believe are difficult but certainly not insurmountable.

It's hard to be optimistic or pessimistic at this point. It hasn't started,

Everybody has got an interest in solving this problem through diplomatic means. ... There will be a point at which we look at the deadline, but we are not at that point yet,

really designed to narrow the differences and maybe, maybe even get to the point where we can really agree on something.

did not make a lot of progress.