these countries are just denying their country from the modern development of internet and online business, If they will not allow their nation for bitcoin then they will not be able to do any online deal as in the near future everyone is going to adopt bitcoin for their use.
i think most of the countries have not yet officially announce bitcoin as legal currency, i think the main reason is that the states are still observing bitcoin and looking to its every aspect either it will effect their fiat currency their economy and either it has any other bad effect on their country then will defiantly study the security measure related to bitcoin and after that they will take any any decision about bitcoin.