The imprisonment of a fourth American could derail a bid by the incoming Biden administration to revive a nuclear agreement with Iran.

The next president may be torn between an instinct for reconciliation and the demand for justice.

In less than a year, Covid-19 has killed almost 400,000 Americans. And in just another month, another 100,000 lives could be lost to the disease.

Armed groups descended upon state Capitols around the country on Sunday, ahead of the inauguration of President-elect Joe Biden. In Lansing, Michigan., men to believed to be part of the “boogaloo” seeking the overthrow of the U.S. government were...

States capitals increased security while Washington, D.C., locked down Sunday ahead of expected inauguration protests. Live updates.

Law enforcement in Washington, DC, and state capitols across the country were on high alert Sunday amid warnings of armed protests ahead of President-elect Joe Biden's inauguration.