Donilon Resigns, Rice To Become National Security Adviser

She's been a lightning rod for Republican criticism over the Obama administration's initial explanations for the attack in Benghazi, Libya, that killed the U.S. ambassador and four others. And now, Susan Rice is getting a new job.

The U.N. ambassador is going to become President Barack Obama's national security adviser, replacing Tom Donilon, who is resigning.

Senate Republicans may criticize the choice, but they won't be able to do anything about it, since the post doesn't require Senate confirmation.

A White House official says former aide Samantha Power will be chosen to replace Rice at the U.N.

Power is a longtime Obama adviser who worked on his 2008 presidential campaign and ran the human rights office in the White House.

She left the administration in February but was considered the favorite to replace Rice at the U.N.