Missiles on display in northern Tehran in 2014. A reported missile test by Iran on Sunday has led some American officials to accuse the country of violating a U.N. resolution that accompanied the 2015 nuclear deal.
Atta Kenare/AFP/Getty Images
Senate Majority Leader Mitch McConnell and Scott Pruitt, Oklahoma's attorney general and President-elect Donald Trump's nominee to head the EPA, earlier this month.
Mark Wilson/Getty Images
Republican presidential candidate, Sen. Marco Rubio, R-Fla., raises his arm with Gov. Nikki Haley and Sen. Tim Scott, R-S.C., during a town hall Thursday in Greenville, S.C.
President Obama said he regrets that the rancor between the parties has grown during his watch. "I guarantee I'll keep trying to be better so long as I hold this office," he said.
Protesters close their eyes in silent prayer as they stand on the South Carolina Statehouse steps during a rally to take down the Confederate flag, Saturday, June 20, 2015, in Columbia, S.C.
Rainier Ehrhardt/Associated Press
South Carolina Gov. Nikki Haley along with Sens. Tim Scott and Lindsey Graham (right, far right) and other lawmakers and activists call for the Confederate flag to be moved from state Capitol grounds.
Joe Raedle/Getty Images