the camp saw heavy fighting, shelling, and outright massacres during the religious conflict known as the lebanese civil war. everywhere, you see posters representing a full menu of political factions and affiliations from assad loyalists, to the plo, to every flavor of extremist. >> man: it's either a jihad, a victory, or martyrism. >> anthony: do you know of any other place in the region where all of these groups are coexisting within a confined space? >> nick: it is stunning to be walking down the street with high heels, short skirts, and vast amounts of red wine flowing. and then drive straight into an extraordinarily conservative, predominately shia district or, you know, the hezbollah district, which is a effectively run by what the us calls a terrorist organization. it's kind of, and it's kind of mind-blowing. >> anthony: i am not a geopolitical expert. and as much time as i've spent in this part of the world, i've spent nowhere near the amount of time this guy has. nick paton walsh. cnn senior international correspondent. >> nick: most of the groups here