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President-elect Donald Trump has selected Exxon Mobil CEO Rex Tillerson to lead the State Department.

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The decision caps a lengthy process that often played out in public and exposed rifts within Trump’s transition team. But Tillerson’s close ties to Russia could still complicate his Senate confirmation hearings.

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“Rex Tillerson’s career is the embodiment of the American dream. Through hard work, dedication and smart deal making, Rex rose through the ranks to become CEO of ExxonMobil, one of the world’s largest and most respected companies,” said President-elect Donald J. Trump.

“His tenacity, broad experience and deep understanding of geopolitics make him an excellent choice for Secretary of State. He will promote regional stability and focus on the core national security interests of the United States. Rex knows how to manage a global enterprise, which is crucial to running a successful State Department, and his relationships with leaders all over the world are second to none. I can think of no one more prepared, and no one more dedicated, to serve as Secretary of State at this critical time in our history.”

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