In pictures: Yemen uprising's deadliest day

Yemeni foreign minister Abu Bakr al-Kurbi (R) listens next to the ambassador Ibrahim Said al-Adoofi during a session on Yemen at the United Nations (UN) Human Rights Council on September 19, 2011 in Geneva. Yemen's government expressed its "sorrow and condemnation" of the violence Sunday that killed 26 people during anti-regime demonstrations, as six new civilian deaths were reported. "The government of Yemen expresses its sorrow and condemnation for all acts of violence and bloodshed as those happened yesterday in Sanaa," foreign minister Abu Bakr al-Kurbi told the UN Human Rights Council. AFP PHOTO / FABRICE COFFRINI *** Local Caption *** 863135-01-08.jpg

A Yemeni man kisses the face of his dead son after he was killed during clashes between anti-government protesters and security forces in Sanaa on September 19, 2011. Mohammed Huwais / AFP Photo

Sanaa // Yemen. September 19 2011. Thousands of Yemenis rally in the city of Ibb, 190 kilometres southwest of Sanaa, against the deadly clashes between anti-government protesters and security forces in the capital. STR / AFP Photo

Thousands of Yemenis rally in the city of Ibb, 190 kilometres southwest of Sanaa, on September 19, 2011 against the deadly clashes between anti-government protesters and security forces in the capita Sanaa. STR / AFP Photo

An anti-government protester holds out his blood-stained hands after clashes with security forces, in Sanaa, Yemen, Sunday, Sept. 18, 2011. Yemeni government forces opened fire with anti-aircraft guns and automatic weapons on tens of thousands of anti-go???

Anti-government protestors carry a wounded defected soldier from the site of clashes with security forces to a field hospital in Sanaa, Yemen, on September 19, 2011. Pro-regime forces, including snipers picking off protesters from rooftops, killed severa???

Anti-government protesters use a motorcycle to evacuate Hassan Wadaf, a cameraman wounded at the site of clashes with security forces, in Sanaa, Yemen, on September 19 2011. Hani Mohammed / AP Photo

Anti-government protesters throw rocks at police as smoke rises from a government building during clashes in Sanaa on September 18, 2011. At least 20 protesters were killed when security forces fired on one of the biggest demonstrations against President ???

Defected army soldiers backing anti-government protesters stand guard on a car as protesters march to demand the ouster of Yemen's President Ali Abdullah Saleh in Sanaa on September 18 2011. Khaled Abdullah / Reuters

A medic attends to Anees, a nine-month-old baby boy, who died later, after being shot while he was in his mother's car during clashes between security forces and defected army soldiers backing anti-government protesters in Sanaa on September 19 2011. Kha???

A woman reacts as she waits outside a makeshift clinic for news about her son, who was injured during clashes between anti-government protesters and security forces, in Sanaa September 19, 2011. Soldiers opposed to President Ali Abdullah Saleh exchanged ???

Anti-government protesters demanding the ousting of Yemen's President Ali Abdullah Saleh flee after security forces fired tear gas grenades at them during clashes in the southern city of Taiz on September 19, 2011. Stringer / Reuters

Anti-government protesters carry a wounded defected soldier from the site of clashes with security forces to a field hospital in Sanaa, Yemen, Monday, Sept. 19, 2011. Hani Mohammed / AP Photo