I'm willing to assist (IC and OOC) in smoothing over any bumps and polishing the final result, if you wish, although you should agree on the terms and conditions between yourselves. To quote the saying, it's "Not my monkey, not my circus"! :)
Saigon is fine for a peace conference location. I also suggest you consider Vladivostok, as it's more closely accessible to all three of the combatants (ergo, the delegations can spend less time traveling).