Nigeria Listed among Most Dangerous Countries for European Tourists- INDEPENDENT

The UK Foreign office currently has warnings or alerts out against travelling to 59 countries.
The map below shows the countries that have travel alerts against them. The countries in red are countries with 'warnings' meaning that the UK Foreign Office advise against travel in certain parts of the country - or only "essential" travel in certain areas.
The countries in blue show the places that the Foreign Office advises against all travel to, and the countries in green are safe.
The Foreign Office advises against all travel to:

• Afghanistan
• Burkina Faso
•  Burundi
• Central African Republic
•  Chad
• Democratic Republic of the Congo
• Gambia
• Iraq
• Libya
• Mali
• Mauritania
• Niger
• Palestinian territories
• Somalia
• South Sudan
• Syria
• Tunisia
• Yemen

They also advice against travel to parts of the following:

• Algeria
• Angola
• Armenia
• Azerbaijan
•  Bangladesh
• Burma (Myanmar)
• Cameroon
• Colombia,
• Djibouti
• Ecuador
• Egypt
• Eritrea
• Ethiopia
• Georgia
• Haiti
• India
• Iran
• Israel
• Ivory Coast
• Jordan
• Kenya
• Kosovo
• Lebanon
• Madagascar
• Malaysia
• Nigeria
• Pakistan
• Philippines
• Republic of the Congo
• Russia
• Saudi Arabia
• Sudan
• Tajikistan
• Thailand
• Turkey
• Uganda
• Ukraine 
• Venezuela
• Western Sahara

If in doubt, check the Foreign Office website before travelling to any of the above countries.
 Source:  Bridie Pearson-Jones, Jack Webb in discover of  INDEPENDENT