President Hamid Karzai says he will meet President Barack Obama in Washington next month to discuss a postwar U.S. role in his country. At a news conference with visiting Defense Secretary Leon Panetta, Karzai said he and Mr. Obama will discuss how many U.S. troops will remain after the Western combat mission ends in December 2014. Immunity from Afghan laws for those remaining Americans is said to be of great importance" to Obama administration, but Karzai said he has his own priorities in negotiating a postwar U.S. role.