Adm. Michael Mullen to meet with Pakistan 's new prime minister and military chief . Relations between U.S. and Pakistan tense since U.S. raid in Pakistani tribal region . The chairman of the U.S. Joint Chiefs of Staff arrived in Pakistan on Tuesday amid tensions between the two countries about U.S. military incursions into Pakistan 's tribal areas . Comment:
Adm. Michael Mullen to meet with Pakistan 's new prime minister and military chief . Relations between U.S. and Pakistan tense since U.S. raid in Pakistani tribal region . Comment: