Editor's note: Read all of Security Clearance's coverage of the 2012 NATO summit in Chicago. Follow our reporting and other key NATO tweets with our NATO summit Twitter list.
From Elise Labott and Mike Mount in Chicago
On Sunday, the war in Afghanistan is expected to dominate discussions at the NATO summit. Afghan President Hamid Karzai and Pakistani President Asif Zardari are both expected to attend the meeting.
NATO leaders are currently on a timetable to withdraw all of the alliance's combat troops from Afghanistan in 2014.
Senior administration officials tell CNN that NATO members have tentatively agreed on a security transition plan from NATO's International Security Assistance Force to the Afghan National Security Forces before 2014. The plan, which also lays out a NATO training and advisory role after 2014, is expected to be formally adopted at the summit.
One of the key issues to be discussed in Chicago is who will pay to build up Afghan security forces during and after the NATO drawdown. Afghan national security forces should total around 350,000 by 2015, according to CNN National Security Analyst Peter Bergen. Karzai's government can afford to cover only a fraction of the cost, which is expected to total roughly $4 billion annually after 2014, Bergen notes.
Non-U.S. ISAF countries are being asked to come up with $1.3 billion, the officials said.
Another issue is Islamabad's continued blockade of much-needed NATO supplies over Pakistani roads to Afghanistan. Pakistan has kept its airspace open but closed its ground routes after the death of about two dozen Pakistani soldiers in November at the hands of NATO forces at a post on the Afghan-Pakistan border. NATO insists that the incident was an accident. Negotiations on the issue continue, the senior administration officials said.
Obama officials are also pushing for more Pakistani involvement in peace talks with the Taliban.
The United States also expects Hollande to announce the removal of French combat troops from Afghanistan - a position he asserted during the presidential campaign.