ISLAMABAD - US Secretary of State Hillary Clinton Thursday night called President Asif Ali Zardari and reiterated US support for the rehabilitation of the Internally Displaced Persons (IDPs).According to presidential spokesman, American Secretary of State Hillary Clinton also welcomed the launch of UN probe into Benazir Bhuttos assassination. She assured the US Presidents complete support for the rehabilitation of the IDPs, said the spokesman. Monitoring Desk adds: A private TV channel reported that matters relating to mutual interest were also discussed.