Security Issues my ass, they are going to Paris and London and are currently in Mexico. Those places can be just as dangerous. I think it's a visa thing. But who knows. I wish they would just come out and say if they are still coming or not. Just leaving it up in the air just keeps people's hopes up.
They had also originally announced Thailand as a stop, but haven't given any new info on that, either. My current assumption is that they're both cancelled, or at least that they don't have anything concrete yet so they don't want to say anything either way. Still frustrating.