Nancy Reagan (left) and Soviet first lady Raisa Gorbachev both smile politely during a tension-filled tea in Geneva in 1985, while their husbands discussed nuclear disarmament.
Greek Prime Minister Alexis Tsipras (fourth from the left) leads the first cabinet meeting of his government Jan. 28 in Athens. He's been criticized for selecting no women for senior positions.
Jane Byrne savors her victory in the previous night's Democratic primary in 1979, when she defeated incumbent Chicago Mayor Michael Bilandic. She became the city's first female mayor.
An audience, mostly women, listen behind President Barack Obama in Oct. 2012 as he speaks about the choice facing women in the election during a campaign event at George Mason University in Fairfax, Va.