According to the constitution of Cyprus, the president must be of Greek descent and the vice president must be Turkish. Strife between Turkish and Greek parties beginning in the 1960s has led to Cyprus’s vice presidency being officially vacant for more than five decades.

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The Surprisingly Disorderly History of the U.S. Presidential Succession Order

In 1981 U.S. Pres. Ronald Reagan was shot during an assassination attempt. While he was incapacitated in the hospital, Secretary of State Alexander Haig famously declared, “I am in control here.” He also told reporters, “Constitutionally, gentlemen, you have the president, the vice president, and