United States Secretary of State, Hillary Clinton is in Afghanistan for talks with President Hamid Karzai.
Mrs Clinton's arrival follows several high-profile attacks in Kabul, including an assault on the US embassy last month and the assassination of a leading peace negotiator.
An official travelling with her says she wants to reinforce the US commitment to Afghanistan.
Mrs Clinton is expected to discuss ties between Afghanistan and Pakistan, and to preview plans for conferences on the future of Afghanistan due to be held in Istanbul in November and Bonn in December.
