King Abdullah’s succession plan for Saudi Arabia’s aging leadership may be his most important legacy at a time of multiple crises in the Middle East, says expert Rachel Bronson.

Despite last week’s fence-mending meeting between President Obama and King Abdullah, serious differences over policy regarding Iran, Syria, and Egypt remain between the United States and Saudi Arabia…

Thomas W. Lippman, a specialist on Persian Gulf security, says U.S. Secretary of State Hillary Clinton’s warning about a U.S. "defense umbrella" to protect regional states from any Iranian nuclear ar…

Stephen Sestanovich, CFR’s top Russia expert, says the informal summit at Kennebunkport, Maine, restored nuclear issues as “the core of the relationship.”

Amity Shlaes, an economic scholar, says she is impressed by Sen. John McCain’s New Hampshire primary win but notes that he has not traditionally concentrated on economic policy, a chief area of voter…