Global Ipsos study finds unemployment is the biggest worry of the world;
Britain is the country most worried about immigration and extremism out of 25 countries around the world;
French most likely to say things are going in wrong direction in their country;
Turks are those most worried about terrorism - the highest level of worry about any specific issue;
For South Africans, financial and political corruption is the issue that causes the most concern, followed by unemployment and then crime/violence