PHOTOS: Inauguration Day 2021

Inauguration Day 2021 photos of D.C. preparations, security and the ceremonies held to commemorate the 46th president of the United States.

Under Biden, world leaders hope for renewed US cooperation

World leaders welcomed into their ranks the new U.S. President Joe Biden, noting their most pressing problems, including the COVID-19 pandemic and climate change, require multilateral cooperation, an approach his predecessor Donald Trump ridiculed.