WALGHA, Syria: The United States said early Saturday (Jul 19) that it had negotiated a ceasefire between Israel and Syria's government as new clashes erupted in Syria's Druze heartland following violence that prompted massive Israeli strikes. At least 638 people have died since Sunday in violence between the Druze and Bedouins , according to the Syrian Observatory for Human Rights, drawing questions over the authority of Syria's interim leader Ahmed al-Sharaa. Israel intervened Wednesday with