Former secretary of state Hillary Rodham Clinton and her daughter, Chelsea, met Tuesday at the United Nations with Secretary-General Ban Ki-moon to discuss worldwide women's equality.

The U.N. chief told reporters that Clinton would play "a very important role" in next year's 20th anniversary celebration of the historic 1995 U.N. conference on women in Beijing, where as first lady she famously declared that "women's rights are human rights and human rights are women's rights."

Flanked by Hillary and Chelsea Clinton, Ban said, "We have seen a great deal of progress since 1995, but still too many women face far too much discrimination and violence. We have to change this phenomenon. I am very much committed to work together with you, and I really count on your continued leadership and engagement."

Hillary Clinton said women's rights and empowerment is an issue of "global importance" and that she looks forward to working with the United Nations in 2015 to mark two decades since the landmark Beijing conference.

Clinton is leading a women's project called "No Ceilings" at her family's charitable foundation. She announced last September that she would lead a "full and clear-eyed" review in advance of the 2015 anniversary, called "Beijing Plus 20," of the advances made for women's equality as well as the obstacles that remain.

Clinton's aides did not tell reporters about her visit to the United Nations. The meeting with Ban was private, although he and the Clintons made brief remarks and posed for photos with the U.N. press corps in New York.