ISLAMABAD, Pakistan (CNN) -- 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. Adm. Michael Mullen will meet with Pakistan's new prime minister and its military chief. Adm. Michael Mullen will meet with Pakistan's newly elected prime minister, Yousaf Raza Gilani, and Pakistan's military chief, Gen. Parvez Kayani, Mullen's office said. Relations between the United States and Pakistan have been tense since the U.S. military sent ground forces into Pakistan's tribal regions earlier this month without Islamabad's permission. The incident prompted the Pakistani government to summon the U.S. ambassador to voice its disapproval, as well as deliver a "demarche" (a diplomatic petition or protest) through its ambassador in Washington.
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Adm. Michael Mullen to meet with Pakistan's new prime minister and military chief
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Relations between U.S. and Pakistan tense since U.S. raid in Pakistani tribal region
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Suicide attack kills 3 soldiers, wounds 6 others in Pakistan region of Swat
Meanwhile, a suicide attack late Tuesday evening in the restive area of Swat killed three soldiers and wounded six others, the @placeholder military told CNN.