NEW : -- An immediate end to all fighting . Leading rebel official calls on international community to help Libyans civilians . At least 10 killed in Qatar shelling , doctor says . Britain and Qatar call for intensified NATO attacks . Ex-Foreign Minister Koussa flies to France ahead of an international meeting .
NEW : Leading rebel official calls on international community to help Libyans civilians . At least 10 killed in Qatar shelling , doctor says . Britain and Qatar call for intensified NATO attacks . Ex-Foreign Minister Koussa flies to France ahead of an international meeting .