ISLAMABAD - Prime Minister Syed Yousuf Raza Gilani said that Pakistan desired to further expand the existing cordial friendly ties with Sri Lanka with particular emphasis on trade and defence cooperation fields.                                                                                     The PM said this while talking to the outgoing High Commissioner of Sri Lanka, Wijeratne Bandara Dorakumbura who paid a farewell call on him at the PM's House this morning. The prime minister appreciated the role of the High Commissioner in strengthening Pakistan-Sri Lanka relations. He fondly recalled his recent visit to Colombo to participate in the 15th SAARC Summit during which he had very useful meetings with the Sri Lankan President, prime minister and Speaker of the National Assembly.  The prime minister said that Pakistan supports the unity, territorial integrity and sovereignty of Sri Lanka. He hoped that lasting peace would soon be achieved in the country. The High Commissioner termed Sri Lanka as the best friend of Pakistan. He thanked the prime minister for the complete cooperation of the government of Pakistan in discharge of his duties as High Commissioner and conveyed the best wishes of his President and PM to Gilani.