Each Friday, I look at what is happening in President-Elect Joe Biden’s transition to the White House. This week: Iran will likely provide an early test for Biden and his national security team.

With the twentieth anniversary of 9/11 this past Saturday, we share resources that readers flagged for us or that we otherwise missed about that day and its consequences

The former New Jersey governor announced his candidacy for the 2024 Republican presidential nomination. 

On December 3, John Nkengasong, director, Africa Centers for Disease Control and Prevention (Africa CDC), announced a 60 percent vaccination target—one estimate of the level needed to achieve herd immunity from COVID-19—in Africa’s fifty-four countries.