Afghanistan, March 20 -- Afghanistan has again been ranked the world's unhappiest country, while Finland was named the happiest nation for the ninth consecutive year in the latest World Happiness Report. The report says Afghanistan has moved in the opposite direction since 2013, with Afghan women recording the lowest average life satisfaction levels.

The annual report is based on Gallup World Poll data collected through interviews with people in more than 147 countries. It measures life evaluations as well as positive and negative emotions, and ranks countries using factors including quality of life, economic conditions, life expectancy, freedom, trust, fairness and confidence in government.

According to the report, Afghanistan had the lo...