US First Lady Michelle Obama (2-R), Sasha Obama (2-L) and Malia Obama (L) are greeted by Princess Lalla Salma of Morocco (R) ahead of a private visit at the King Palace's in Marrakech, Morocco, 28 June 2016. US First Lady Michelle Obama visited Morocco to promote education for girls in the North African kingdom, where only 36 per cent of girls continue school beyond the primary level. EPA/STR