US First Lady Michelle Obama (R) receives a bouquet upon her arrival at Siem Reap international airport late on March 20, 2015. Michelle Obama flew into Cambodia late March 20 becoming the first wife of a sitting US president to visit the country, part of a two-nation trip to highlight the importance of girls' education. AFP PHOTO / TANG CHHIN SOTHY (Photo credit should read TANG CHHIN SOTHY/AFP via Getty Images)
