Palestinian President Mahmoud Abbas will pay a three-day official visit to Sri Lanka on April 15, as part of a foreign tour that will also take him to Japan and Maldives. During the visiting, President Abbas will hold talk with Sri Lankan President Mahindra Rajapaksa on strengthening the bilateral relations. On Sunday, Political Adviser to the Palestinian President Nemer Hammad said that Abbas will start a tour of several countries this week aim at bolstering political and economic relations.