KABUL, Afghanistan (AP) -- Secretary of State Hillary Rodham Clinton has arrived in Kabul on an unannounced visit to Afghanistan.

Clinton will meet Saturday morning with Afghan President Hamid Karzai to discuss U.S.-Afghan civilian and defense ties. They will also speak about stalled Afghan reconciliation efforts.

Clinton will then head to Japan for an international conference on Afghan civilian assistance. Donors are expected to pledge around $4 billion a year in long-term civilian support.

Clinton arrived in Afghanistan from Paris, where she attended a 100-nation conference on Syria.