Take Sultan Haji Hassanal Bolkiah of Brunei, for example, who is estimated to be worth $20 billion, according to Forbes.com.

据Forbes.com估计，文莱苏丹哈吉·哈桑纳尔·博尔基亚的财富约有200亿美元。

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On Feb. 22, the office of the prime minister, Sultan Hassanal Bolkiah, released a three-page statement.

CNN: 'Everyone Was Shocked'

President Obama will welcome His Majesty Sultan Haji Hassanal Bolkiah of Brunei Darussalam to the White House on Tuesday, March 12, 2013.

WHITEHOUSE: The White House

Brunei's publicity-shy leader, Sultan Hassanal Bolkiah, has led the tedious legwork to avoid any major hitch in the ASEAN summits his tiny but oil-rich kingdom hosts this year.

NPR: Sea Disputes, NKorea In Spotlight At ASEAN Summit