US First Lady Michelle Obama (2nd R) shakes hands with Cambodian government officials as Cambodian First Lady Bun Rany (C) welcomes 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/Getty Images)
