A senior Hamas leader is on a surprise visit to Ankara for talks with Turkish diplomats. Turkey said they would use the meeting with Khalid Mishaal, the exiled supreme leader of Hamas, on Thursday to put forward international demands for the resistance group to renounce violence.A Turkish Foreign Ministry statement said: "The expectations of the international community following the Palestinian elections will be clearly conveyed during the talks," adding that Hamas had asked to send a delegation to Turkey. Mishaal is on a tour to muster support from Muslim states to counter Western governments' efforts to step up the pressure on the party that won last month's Palestinian elections.