Which exchange websites are you talking about? Kraken? Kraken seems to be back and running well now.
Which countries? All I heard about was a false rumor on South Korea banning Bitcoin, "false" in the sense that as usual the main information was misunderstood (South Korea is thinking to forbid anonymous trading of cryptocurrencies, which is not the same thing as "banning Bitcoin").

There is a summit in Buenos Aires soon regarding regulations to be implemented, but no info about this yet and it is in April anyway.