Nato leaders gather in Chicago today for a summit that will chart a path out of Afghanistan, as Western nations seek to fend off fissures in their alliance and ensure Afghanistan can hold a still-potent Taliban at bay when foreign troops withdraw.
The shadow cast by fiscal pressures in Europe and elsewhere will follow leaders from Mr Obama's presidential retreat in Maryland to the talks on Afghanistan, an unwelcome weight on countries mindful of dwindling support for a costly campaign that has not defeated the Taliban in more than 10 years.
The Obama administration, looking ahead to November presidential elections, is expected to emphasize a common alliance vision for gradually pulling most of the Nato force of around 130,000 by the end of 2014.
It will also highlight Afghanistan's strides toward taking charge of its own security.
In addition to the shared fiscal stress, the talks may be characterized by undercurrents of dissent between leaders in Washington, Brussels and other nations, like France, who are more eager to go home.
France's new leader, Francois Hollande, repeated a pledge during his inaugural visit to Washington last week to pull "combat troops" from Afghanistan this year.
He has said an extremely limited number of soldiers would remain to train Afghan forces and bring back equipment beyond 2012.
"This decision is an act of sovereignty and must be done in good co-ordination with our allies and partners," said Mr Hollande, who will discuss his exit plans with Afghan president Hamid Karzai today.
Yet Mr Hollande has declined to define the details of his withdrawal, saying that was France's "business."
The careful French comments, leaving room for various interpretations, illustrate the balance Nato leaders strike as they seek to avoid the appearance of splits with Nato partners without alienating voters who want to see a swift exit.
Alliance leaders may use the same approach in discussions this weekend of long-term funding for Afghan police and army, whose ability to battle the Taliban is at the core of Nato strategy for exiting Afghanistan smoothly.
The Obama administration has been seeking promises from its allies in Afghanistan to give $1.3 billion a year for Afghan forces.
While there are few doubts allies will eventually provide support, it appeared unlikely heading into the summit that it would meet that goal by the end of the meeting.