Afghanistan and the United States have finalized the initial draft of a strategic partnership agreement outlining their relationship following the 2014 withdrawal of Western combat troops from Afghanistan.

No details have been released about the content of the draft agreement, which will now be reviewed by the U.S. and Afghan presidents, the U.S. Congress and the Afghan parliament.

A statement from Afghan President's office says the draft agreement was initialed yesterday by Afghan National Security Advisor Rangin Dadfar Spanta and U.S. Ambassador Ryan Crocker in Kabul.

U.S. officials say President Barack Obama expects to sign the document before a NATO summit in Chicago next month.

President Karzai has said he wanted a written commitment of 2 billion dollars a year from the United States after the withdrawal. U.S. officials said they could pay up to about 4 billion dollars a year to fund Afghan forces.