First lady will take over from her husband to draw attention to kidnappings ahead of mother's day in the US
America's first lady Michelle Obama will deliver her husband's weekly radio address this weekend to draw attention to the plight of the kidnapped schoolgirls in Nigeria.
As the UN security council on Friday night expressed outrage at the abductions by Islamist militants and demanded their immediate release, a White House spokesman confirmed that Mrs Obama would be making the address ahead of mother's day, which is on Sunday in the US .
