US Assistant Secretary of State Richard Boucher arrived in Islamabad on Wednesday for talks with Pakistani leaders on a range of issues including security in Afghanistan and recent political developments in Pakistan, officials said. Boucher arrived on a two-day visit to the Pakistan capital, US Embassy spokeswoman Liz Colton said. She did not provide further details. Talks between the two sides are likely to focus on a recent meeting of Pakistani and Afghan tribal leaders to discuss peace in Afghanistan, Pakistan-US relations and Pakistan's internal political situation, a senior Pakistan government official said on condition of anonymity because he was not authorized to make media comments. Boucher was to hold talks later Wednesday with President Gen. Pervez Musharraf and Foreign Minister Khursheed Kasuri, the official said.