Thanks for that clarification (and to the previous poster for pointing it out). So, looks like I'll either need to originate in LHR or head back towards the US via LHR. Not a huge problem, though I hope it won't add significantly to the taxes.

BEYFlyer, looks like I'll be in Beirut from the end of June for around six weeks, so I'll miss that event in May, but perhaps I'll see you there in July some time!