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Expert Voices
What comes next in Iran vs. Saudi Arabia
Rebecca Zisser / Axios

Iran and Saudi Arabia's regional tug of war has shaped the Middle East for decades - think Iraq, Kuwait, Lebanon, and Arab Spring hotspots Syria and Yemen.

Saudi Arabia's King Salman is 81 and Iran's Supreme Leader, Ayatollah Khamenei is 78. What will the inevitable transition of power in these two influential countries — and historical rivals — mean for the region? We asked five experts for their perspective and predictions: