This week Defense Secretary James Mattis takes his first overseas trip, to South Korea and Japan. The U.S. allies are eager to hear what he has to say.
When the clock struck noon, the White House website switched over to signify Donald Trump becoming the new president. And on that site, Trump laid out how he would approach the world.
The president-elect's comments on Israel, China and nuclear policy also highlight how reactionary comments on social media can immediately spur international concern and attention.
Russian intelligence services are the main suspects behind the hacking of DNC emails, and many Democrats warn that the Russian president has stepped into American politics in an unprecedented way.
"This is not someone who should ever have the nuclear codes. Because it's not hard to imagine Donald Trump leading us into a war just because somebody got under his very thin skin," Clinton said.
The New York billionaire's speech was short on specifics, but was more subdued and serious than often seen on the campaign trail, a sign of Trump's attempt to project a presidential tone.