WASHINGTON — President-elect Joe Biden will name Antony Blinken, a veteran foreign policy official and longtime confidant, as his secretary of state, according to a source familiar with the decision.

Blinken, who held top-level national security and State Department positions during the Obama administration, has worked side-by-side with Biden on foreign policy issues for nearly two decades.

Biden has called Blinken a “superstar” and once said he could do “any job.” By choosing Blinken for one of the most coveted jobs in the Cabinet, Biden is aiming to install an alter-ego at the helm of the State Department.

But the move may disappoint some who wanted Biden to nominate Susan Rice, another longtime foreign policy hand and a Black woman, to lead the State Department. Biden has pledged to appoint a diverse Cabinet and tapping Rice would have sent an early signal of his commitment to fulfilling that pledge.

The American-born, Paris-raised Blinken is a safer pick when it comes to Senate confirmation. Rice would have faced a Republican grilling over her initial statements about the 2012 Benghazi attacks that left four Americans dead.

47th Vice President of the United States Joe Biden and Former Deputy Secretary of State Antony Blinken attend the National Committee On American Foreign Policy 2017 Gala Awards Dinner on October 30, 2017 in New York City.

Biden is also expected to name Linda Thomas-Greenfield, a Black woman who held a top diplomatic post in the Obama administration, as U.S. ambassador to the United Nations, according to multiple reports.

A spokesman for the Biden campaign declined to confirm Thomas-Greenfield or Blinken’s nomination.

Blinken will be tasked with carrying out a weighty agenda. Asked about Biden’s foreign policy vision in a Sept. 15 podcast interview with CBS, Blinken said he could sum it up in three words: “leadership, cooperation and democracy.”

Blinken argued that “the world just doesn’t organize itself” and that America needs to take a leadership role.

“When we’re not engaged, when we don’t lead, then one or two things is likely to happen,” Blinken said. “Either some other country tries to take our place – but probably not in a way that advances our interests or values – or no one does. And then you get chaos or a vacuum filled by bad things before it’s filled by good things. Either way, that’s bad for us.”

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The 58-year-old Blinken was Biden’s staff director on the Senate Foreign Relations Committee for six years, starting in 2002. When Biden became vice president, Blinken became his national security director – before President Barack Obama elevated him to higher positions, including the No. 2 job at the State Department.

Blinken “knows everything about the president-elect’s perspectives on national security and foreign policy,” said Wendy Sherman, who served as undersecretary of state for political affairs in the Obama administration.