Fighting is raging between rebels and loyalist forces in Syria’s northern Latakia province, after 34 people were killed as Islamists sought to seize a border crossing into Turkey, a non-government organisation says.The fighting prompted the Syrian government to complain to the United Nations that Turkey was providing cover to rebels crossing the border from its territory.Latakia province is considered a regime stronghold and parts of Latakia have remained relatively insulated from three years of fighting in Syria, but the province was shaken on Friday as three Islamist groups battled to seize the Kasab border crossing.