(Clarifies sentence in seventh paragraph)ISTANBUL (Reuters) -President Tayyip Erdogan said on Monday that Turkey was determined to eliminate threats originating in northern Syria, adding an attack by Kurdish YPG militants that killed two Turkish police was "the final straw." Two Turkish police were killed on Sunday in a guided missile attack in northern Syria's Azaz region, which Turkey said was launched by the YPG, according to the Interior Ministry. The attack was launched from the Tal Rifaat region, it said. "The latest attack on our police and the harassment that targets our soil are the final straw," Erdogan said. Ankara has launched two other cross-border operations in Syria against the YPG, one of which targeted the Afrin region.
