At least 11 people have been killed in heavy fighting in the Yemeni city of Taiz, a day after a UN envoy began a new mission to push President Ali Abdullah Saleh to quit under a Gulf peace plan.<br /><br />Witnesses and medical staff said at least 25 people were also wounded on Friday in fighting between Saleh's Republican Guards and opposition tribesmen in Yemen's third largest city.<br /><br />Witnesses said two children and three woman were among those killed in tank and mortar fire aimed at the al-Rawda and Zaid al-Moshki districts, as well as Freedom Square - where demonstrators demanding an end to Saleh's 33-year-long rule had gathered for noon prayers.<br /><br />Al Jazeera's Imran Khan reports.
