Tawakul Karman, a Yemeni journalist and activist, is one of three women awarded the 2011 Nobel Peace Prize. She becomes the first Arab woman to win the prize.
The 32-year-old mother of three founded Women Journalists Without Chains in 2005.
She has been a prominent activist and advocate of human rights and freedom of expression for the last five years, and led regular protests and sit-ins calling for the release of political prisoners.
The Norwegian Nobel Committee cited Ms Karman and the two other winners for their "non-violent struggle for the safety of women and for women's rights to full participation in peace-building work".
The Nobel jury specifically lauded Ms Karman for playing, "in the most trying circumstances, both before and during the Arab Spring... a leading part in the struggle for women's rights and for democracy and peace in Yemen."