A member of the Saudi border guards mans a machine gun at the border with Iraq in July. Since the so-called Islamic State launched its offensive this summer in Iraq, Saudi Arabia has sent thousands of troops to the region. Faisal Nasser/Reuters/Landov hide caption

Richard Nixon and Daniel Patrick Moynihan at the U.S. Capitol Building in 1970. AP hide caption

McDonald's says that same-store sales in its U.S. locations dropped nearly 5 percent in November, continuing a downward trend. Joe Raedle/Getty Images hide caption

Thomas Harden of Chicago pumps gas into his truck. He says he wouldn't support a gas tax increase. David Schaper/NPR hide caption

Joni Mitchell, pictured here in 1970, wrote the song "Carey" while living in Matala, Crete. Michael Ochs Archives/Getty Images hide caption

Perry Wallace, playing for Vanderbilt University, blocks the shot of 'Pistol' Pete Maravich, circa 1970. Frank Empson/The Tennessean hide caption

Wilfredo Díaz left Honduras 16 years ago before his third child was born, and he hopes to bring his children to the U.S. under the State Department's new program. Alexandra Starr hide caption

Damaged olives hang in the grove belonging to Augusto Spagnoli, an oil producer from Nerola, near Rome. Producers and experts declared Italy's 2014 olive harvest the worst in history, due to adverse climatic conditions that helped the olive fly proliferate, thus destroying the olives before they could be harvested. Alessandra Tarantino/AP hide caption

The Café Edison serves what might be called Jewish soul food — blintzes, matzoh ball soup and kasha varnishkes. Jeff Lunden hide caption