A Middle Eastern city has been named as the capital with the worst quality of life by a new survey. The world's largest HR consultancy company - Mercer- publishes its Quality of Living Index every year.

The survey tries to identify the cities that provide the best standard of living around the world. The researchers take into account a number of criteria - such as the political and social environment, the economy, medical and health services, schools and education. as well as housing - to name but a few.