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© Hassan Ammar/APBahraini riot police chase protesters in central Manama

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© Hasan Jamali/AP Bahraini protesters remove barbed wire near the Pearl monument in the city centre

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© Hamad I Mohammed/Reuters Protesters pray after re-occupying an area in the centre of Manama

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© John Moore/Getty Images Anti-government demonstrators celebrate as they re-occupy the area of ground around the Pearl monument

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© Caren Firouz/ReutersProtesters display a collection of US-made non-lethal weaponry used by the Bahraini government against them

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© Mazen Mahdi/EPAProtesters wave flags and celebrate after reaching the area some protesters have nicknamed "Lulu Square" in Manama

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© Mazen Mahdi/EPAA Bahraini army armoured vehicle drives past a Formula One advertising poster as it leaves its position near "Lulu Square"

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© John Moore/Getty ImagesAn anti-government protester gestures in front of police in Manama, Bahrain

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© Hasan Jamali/APBahraini protesters rush to celebrate as the riot police pull out

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© Caren Firouz/ReuterAn anti-government protester wrapped in a Bahraini flag watches from a bridge as the crowd gather around the Pearl monument

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© Muhammed Muheisen/APSupporters of the Yemeni government, background, and anti-government demonstrators, foreground, hurl stones at each other during clashes in Sana'a, Yemen

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© Ahmad Gharabli/AFP/Getty ImagesYemeni protesters raise their shoes as they shout slogans against President Ali Abdullah Saleh

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© Yahya Arhab/EPAYemeni protesters help an injured man

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© AFP/Getty ImagesTyres burn as Yemenis take to the streets

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© Abdelhak Senna/AFP/Getty ImagesA Moroccan man carries an Egyptian flag in one hand, and an image of Che Guevara in the other, during a protest in Rabat, Morocco

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© ReutersIraqi Kurds protest to demand the removal of the local government

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© Farouk Batiche/AFP/Getty ImagesA man gestures towards Algerian riot police

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© Mohamed Messara/EPAAlgerian protesters chant slogans during a demonstration in Algiers

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© Fethi Belaid/AFP/Getty ImagesTunisians protest outside the gates to the French embassy in Tunis for remarks made by French ambassador Boris Boillon

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© Hassan Ammar/APAn anti-government demonstrator shows a picture of a wounded man, who she says was injured during a raid on Pearl Square in Manama, Bahrain.

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© Hassan Ammar/APAn injured anti-government demonstrator is carried to hospital in Manama

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© Hassan Ammar/APWomen demonstrators shout anti-government slogans after riot police drove demonstrators from the main square in Manama

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© Joseph Eid/AFP/Getty ImagesA wounded demonstrator receives treatment in Manama, the Bahraini capital

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© Hassan Ammar/APAnti-government demonstrators burn a picture of the late Bahraini emir Sheikh Issa Bin Salman al-Khalifa outside Salmaniya hospital in Manama

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© Mazen Mahdi/EPAParamedics who were injured by security forces at Salmaniya medical complex in Manama, Bahrain

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© John Moore/Getty ImagesDoctors protests against the actions of security forces outside a hospital in Manama

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© APThe body of a person killed during clashes between demonstrators and police lies in the street in Manama

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© John Moore/Getty ImagesA man visits his unconscious father in hospital in Bahrain

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© John Moore/Getty ImagesWomen weep outside a hospital morgue in Manama

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© John Moore/Getty ImagesA man weeps in a Bahrain hospital after the police opened fire anti-government protesters

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© Yahya Arhab/EPASana'a, Yemen: Soldiers watch anti-government protesters

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© Adam Jan/AFP/Getty ImagesJidhafs, Bahrain: Thousands of Shia anti-government protesters attend the funeral of a comrade who died a day earlier from his wounds received during clashes with police

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© Adam Jan/AFP/Getty ImagesJidhafs, Bahrain: Anti-government protesters carry the coffin of their fellow demonstrator

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© Yahya Arhab/EPASana'a, Yemen: Anti-government protesters shout slogans during a demonstration

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© Yahya Arhab/EPA

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© Mohammad Huwais/AFP/Getty ImagesSana'a, Yemen: Pro-regime supporters (right) confront anti-government protesters outside Sana'a University