that's a load of tosh.. at any given time half the bloody world is in dispute with the other half, who's to decide what's safe and what isn't. you would have some routes that would need refuelling stops because you've triple the distance flying around 4/5 hot spots, and some routes that would be impossible due you no friendly countries to overfly!!
you get in a nasty war of words with Russia and how the hel l you get from Europe to Asia?? no Siberia, no "stans" no Ukraine, might as well write of the eastern med, no bloody Africa. I guess we could always fly west via the US and triple the time....