I think Germany has claim on that. Or maybe France.

If you're serious about attempting another Greek colonization effort (which you shouldn't be), then I'd suggest waiting until after the conference. Otherwise you may step into an area already claimed by someone in the conference, and in doing so you'll undermine the whole thing and get put on everyone's shitlist. And seeing as the conference acts as an agreement between the nations to not colonize areas claimed by others, you can bet that if you end up stepping on say.. Germany's toes, no-one is going to come to your rescue when Germany opens up a can of whoop-ass on you. Same goes with any nation attending the conference. The nations in the conference will recognize the claims made in the conference over those made by Greece on its own.