100 Women

Each year, 12 million underaged girls are forced into marriage - a crisis that at the current rate will take over 300 years to fix, says the UN. Now, three of the world's most high-profile humanitarians have vowed to tackle the issue together. In a BBC 100 Women exclusive, Michelle Obama, Amal Clooney and Melinda French Gates talk to BBC Gender & Identity Correspondent Megha Mohan about the work they do to combat child marriage and amplify the efforts of grassroots organisations.