Prime Minister David Cameron has promised Britain's Tamil community he will push for an international probe into alleged war crimes and human rights abuses when he attends a Commonwealth summit in Sri Lanka. Cameron held talks with critics of President Mahinda Rajapaksa's rule to explain his decision to attend the meeting in Colombo on November 15-17 despite calls for a boycott. He also set out plans to visit the north of the island to meet those caught up in the bloody 2009 suppression of the Tamil Tigers' independence battle. In an article for a British-based Tamil newspaper, Cameron said: "Four years after the conflict no one has been held to account for grave allegations of war crimes and intercourseual violence, journalists are routinely intimidated and thousands of people have yet to find out what has happened to their missing relatives.