Blinken’s appointment, first reported Sunday night by Bloomberg News, was confirmed by three people familiar with an announcement scheduled for Tuesday. Jake Sullivan, another top Biden adviser, is expected to be named as national security adviser, according to two people familiar with the announcement.

Biden also is planning to announce Linda Thomas-Greenfield as his nominee for ambassador to the United Nations, giving a former career Foreign Service officer and African American woman one of the most high-profile diplomatic posts in government, according to three people familiar with the decision…

Their placement into key positions offers one of the first windows into the administration Biden is hoping to build. If Trump’s administration was designed to upset the pillars of government and global order, Biden’s appears aimed at rebuilding it with people who have held similar roles in the past. All three expected nominees also served in the Obama administration, a clear sign that Biden will rely on people who held key roles the last time he served in Washington.