US First Lady Michelle Obama speaks to Peace Corps volunteers at a hotel in Siem Reap province on March 21, 2015. Michelle Obama called on schoolgirls to stay in school to push for equality and hold their leaders accountable on March 21, during the first trip by a sitting US president's wife to Cambodia. AFP PHOTO / TANG CHHIN SOTHY (Photo credit should read TANG CHHIN SOTHY/AFP via Getty Images)
