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The richest kings, kings, princes, according to the magazine Forbes (15 pics)
Thailand's King Bhumibol Adulyadej, $ 30 billion.
Sultan of Brunei Haji Hassanal Bolkiah, $ 20 billion
Abdullah - Abdulaziz Al Saud of Saudi Arabia, $ 18 billion
Sheikh Khalifa bin Zayed al-Nahayan of the United Arab Emirates $ 15 billion
Ruler of Dubai Sheikh Mohammed - Rashid al-Maktoum, $ 4.5 billion
Prince Hans-Adam II of Liechtenstein, $ 3.5 billion
Morocco's King Mohammed VI, $ 2.5 billion
Qatar Sheikh Hamad bin Khalifa al-Thani, $ 2.4 billion
Prince of Monaco Albert II, $ 1 billion
His Highness Prince Aga Khan, the spiritual leader of the Shia Ismaili Nizari community, $ 800 million
Sultan of Oman Qaboos bin Said, $ 700 million
Britain's Queen Elizabeth, $ 450 million
Kuwait Sheikh Nasser Al-Mohammad Al-Ahmad Al Jaber Al-Sabah, $ 350 million
Queen of the Netherlands Beatrix, $ 200 million
Swaziland's King Mswati III, $ 100 million
Sultan of Brunei Haji Hassanal Bolkiah, $ 20 billion
Abdullah - Abdulaziz Al Saud of Saudi Arabia, $ 18 billion
Sheikh Khalifa bin Zayed al-Nahayan of the United Arab Emirates $ 15 billion
Ruler of Dubai Sheikh Mohammed - Rashid al-Maktoum, $ 4.5 billion
Prince Hans-Adam II of Liechtenstein, $ 3.5 billion
Morocco's King Mohammed VI, $ 2.5 billion
Qatar Sheikh Hamad bin Khalifa al-Thani, $ 2.4 billion
Prince of Monaco Albert II, $ 1 billion
His Highness Prince Aga Khan, the spiritual leader of the Shia Ismaili Nizari community, $ 800 million
Sultan of Oman Qaboos bin Said, $ 700 million
Britain's Queen Elizabeth, $ 450 million
Kuwait Sheikh Nasser Al-Mohammad Al-Ahmad Al Jaber Al-Sabah, $ 350 million
Queen of the Netherlands Beatrix, $ 200 million
Swaziland's King Mswati III, $ 100 million