Turkish Prime Minister Recep Tayyip Erdogan held closed talks here today with Palestinian President Mahmoud Abbas who is currently visiting Turkey.     The talks dealt with the latest developments in the region, particularly matters related to the Palestinian problem and the going to the United Nations to get recognition of the Palestinian state in September in light of the stumbling peace process due to Israel\'\'s intransigence.    The Talks also dealt with relations between the two countries and ways of enhancing them in various fields.