U.N. chief urges Russia, U.S. to help stop Syria fighting

U.N. Secretary General Ban Ki-moon addresses a news conference in Vienna, Austria, April 26, 2016. REUTERS/Heinz-Peter Bader

UNITED NATIONS (Reuters) - United Nations Secretary-General Ban Ki-moon on Thursday urged Russia and the United States to exert pressure on Syria's warring parties to stop fighting and ensure a credible investigation of air strikes that destroyed an Aleppo hospital. "Instead of bombing civilian areas, all Syrian parties must renew their focus on a political process," Ban's spokesman Stephane Dujarric said in a statement. (Reporting by Michelle Nichols, editing by G Crosse)