UK Foreign Office Travel Advice
With terrorism threats in many parts of the world, you should check the governments advice for travellers. You will this information on the Foreign Office Websites (see link below)
All countries are listed with the relevant advice for that country and even specific parts or regions of that country.
Should there be a threat and the advice is NOT to travel to that country, you should check with your travel adviser as to your travel plans and whether if you do travel you have valid insurance.
UK Foreign Office Website UK FCO