From Iran to North Korea, Biden has a world of challenges to confront after first 100 days

There are also those who fear that, despite the experienced aides with whom Biden has surrounded himself, "there may be an issue with groupthink," according to Karin von Hippel, a former nonpolitical senior adviser at the State Department under Obama. "I think that's a danger with this crowd in particular," said von Hippel, director-general of the Royal United Services Institute think tank in London. "They are all quite alike, and there aren't many people I can think of who are going to challenge the foreign policy, and push alternative views."