The State of Qatar got a new ruler today after the abdication of Sheikh Hamad bin Khalifa Al-Thani, b. 1950, who had been in power since 1995. His younger son Sheikh Tamim Bin Hamad Al-Thani, b. 1980, who was named heir after his brother Sheikh Jassem stepped aside in 2003, has become the new Emir.
I have therefore updated my Longest reigns (current monarchs) website. Some work has also be done on the website in order to make among others the footnotes more readable.
Sheikh Tamim, b. 3 July 1980 according to the website of the Qatari Ministry of Foreign Affairs, is the youngest monarch of the world today, closely followed by the King of Bhutan, Jigme Khesar Namgyal Wangchuk, who was born on 21 February 1980.