Capital: After renewing his oath of office on the steps of the Capitol, President Obama delivered a short inaugural address, built on a theme of shifting challenges facing the nation.
"We have always understood that when times change, so must we," he said, looking out at thousands of spectators crowded onto the National Mall. "That fidelity to our founding principles requires new responses to new challenges, that preserving our individual freedoms ultimately requires collective action."
The president...