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I don't think that Iran is next by any means. The ruling regime there has substantial grass roots support. The Iranian government has had many achievements for the country whereby most Arab regimes haven't achieved anything except slogans and staying power. If and when people in Iran start a sustainable uprising, it will be bloody and far worse than what happened in Tunisia or Egypt.
texswamper,
Is there good diving where you are now (Angola)?
None that I know of. We've been in Luanda since July 2008 and I don't know of any dive operator or even any place that would fill tanks. Angola is trying to focus on rebuilding since the war ended in 2002. Besides, Luanda is the most expensive city in the world now to live in so I can't imagine what someone would charge if they did have a dive operation! A head of cauliflower here can cost $20 USD and a head of iceberg lettuce goes for more than $100 USD!
Angola does have a lot of deep sea fishing however, so maybe diving will be in it's future. However, the water temp of the Atlantic ocean would probably keep me diving on the other side of Africa.
Ouch. Why is it sooo expensive? How do you manage?