Mauritania: Sidi Mohamed Ould Boubacar wants to "put an end to the opacity of the governement" Mauritania's main opposition presidential candidate, Sidi Mohamed Ould Boubacar, says he wants to "put an end to the opacity of the government" before affirming that the majority of the population wants to turn the page on Mohamed Ould Abdel Aziz's 10-year rule, accusing him of "interfering" in the campaign. IMAGES AND SOUNDBITES