Hillary Clinton landed in Kabul for a surprise visit to Afghanistan, Wednesday, marking her first trip to the country as secretary of state.

While there, Clinton will attend the inauguration of President Hamid Karzia. She met with the leader at the presidential palace after arriving.

The U.S. and other nations have put intense pressure on Karzai to fight against Afghanistan's corrupt government.

The hope is that his inauguration speech will bring about concrete promises to change the country's leadership.

Top U.S. commander in Afghanistan Gen. Stanley McChrystal greeted Clinton after she landed, along with Richard Holbrooke, the special U.S. representative for Pakistan and Afghanistan.

Security around the Afghan capital has been tightened over fears Karzai's inauguration could be a target for militant groups.