Bill Clinton, George W. Bush and Abraham Lincoln, men whose heritage had no connection to Africa, did more for the continent.

It's important that when we look back at the 35 years of fighting HIV/AIDS that we consider our successes -- that's how we can summon up the motivation to carry on the struggle.

A data revolution is underway at the U.S. President's Emergency Plan for AIDS Relief (PEPFAR). We're using data in transformational ways to prevent more HIV infections and save more lives, ensuring our investments have the greatest impact by targeting lifesaving interventions to the populations and places with the highest HIV/AIDS burden.

Alarmingly, adolescent girls in sub-Saharan Africa are more than twice as likely as their male counterparts to be newly infected with HIV. Today, on International Women's Day -- and every day -- we must recommit to changing this troubling trend.

Globally, 2015 will be viewed as a turning point for international development. In September, world leaders gathered at the United Nations General Assembly to adopt a set of updated targets -- the Sustainable Development Goals -- to guide development efforts over the next 15 years.