Chart: Vladimir Putin Becomes Russia's Second Longest-Serving Leader | Statista
Sultan Qaboos of Oman, Arab world's longest-serving ruler, dies aged 79
List of current reigning monarchs by length of reign - Wikipedia
The world's longest reigning monarchs - The Day
List of longest-reigning monarchs - Wikipedia
The 12 Longest Reigning Monarchs in History — History is Now Magazine, Podcasts, Blog and Books | Modern International and American history
Infographic: Russian leaders who served the longest time in power - Times of India
Chart: Longest Serving National Leaders | Statista
25 of the Longest-Reigning Monarchs in History | Mental Floss
The Longest-Reigning Monarchs in History -
Richard Barrow on X: "Infographic showing the world's longest-reigning monarchs. Queen Elizabeth II is now the longest reigning monarch who is still alive https://t.co/w91lyLB3Lq" / X
Chart: The Longest Reigning Monarchs in History | Statista
10 Longest Reigning Monarchs in History
100 Longest Reigning Monarchs in History - YouTube
World's longest-serving rulers now include three from the UAE
Haitham bin Tariq al-Said | Arab world's longest serving ruler dies - Telegraph India