This year marks the 75th anniversary of the establishment of the United Nations. The UN has contributed a lot to maintain international peace and security and protect human rights. How much do you know about the UN? Do you know which countries are permanent members of the UN Security Council?

Click here or the picture above to test your UN knowledge.

You could win the ultimate prize — a copy of Berlin Diaries by Marie Vassiltchikov translated into Chinese. The surviving pages of Marie's diary give a unique insight into wartime Germany and life from 1940 to 1944.

The Chinese version was published by Horizon Books, a subsidiary of Shanghai People's Publishing House. It officially launched in January 2018.

We will choose five lucky readers who answered all the questions correctly at random to receive their prize.