Too long in Power -- Queen Elizabeth II -- Top world leaders who are rolled very long in power.

Queen Elizabeth II
UK: 59 years

King Bhumibol Adulyadej
Thailand: 64 years

Sultan Abdul Halim of Kedah
Malaysia: 1952

 

Qaboos Bin Said
Oman: 40 years

Muammar Gaddafi

Libiya - 40 years

Queen Margrethe II
Denmark: 39 years

Hassanal Bolkiah
Brunei: 1943

 

President Ali Abdullah Saleh
Yemen: 31 years

José Eduardo
Angola: 1931

Robert Mugabe
Zimbabwe: 30 years

Prince Khalifa bin Salman Al Khalifa
Bahrain: 30 years

 

King Carl XVI Gustaf
Sweden: 37 years

King Juan Carlos I
Spain: 35 years