With the uptrend of Bitcoin, soon many countries perceived as less powerful will be taking the bold step by adopting Bitcoin institutionally to lessen the effectiveness of US dollar and British pounds which are regarded as being the most used and powerful currencies.
I do not think that majority of the country will use Bitcoin to combat the influence of US dollar and British pounds. More likely these country will focus on strengthening their own currency by improving their economy. Most of the government are still not into Bitcoin, the best they can do is just accept it so that they can milk it for profit. Aside from that, the government always aim for control so this will hinder them from using Bitcoin because they know using Bitcoin will not strengthen their own currency.
they are going to do this in a clever and surreptitious way in subdueing it's expends in their country to enable them to maintain influence of their citizens. Bitcoin as an indistructive currency is a good option to deploy in other to counter your perceived persecutors.
AS I stated the government will rather use their own national currency, strengthen it to keep the control over their economy and lessen the influence of USD and British pounds. Shifting to Bitcoin will make them lose their grasp on the financial aspect of their country because Bitcoin is decentralized and it is more dangerous because only a few people are holding the majority of Bitcoin supply. The government won't allow their economy to be under the grasp of these people, will they?