What Money Can, and Can't, Buy

What it is costing to keep troops in Iraq:

The struggle to entice Army soldiers and Marines to stay in the military, after four years of war in Iraq, has ballooned into a $1 billion campaign, with bonuses soaring nearly sixfold since 2003.

The size and number of bonuses have grown as officials scrambled to meet the steady demand for troops on the battlefields in Iraq and Afghanistan and reverse sporadic shortfalls in the number of National Guard and Reserve soldiers willing to sign on for multiple tours.

But there are some things money can't buy:

The White House wants to appoint a high-powered czar to oversee the wars in Iraq and Afghanistan with authority to issue directions to the Pentagon, the State Department and other agencies, but it has had trouble finding anyone able and willing to take the job, according to people close to the situation.

At least three retired four-star generals approached by the White House in recent weeks have declined to be considered for the position, the sources said, underscoring the administration's difficulty in enlisting its top recruits to join the team after five years of warfare that have taxed the United States and its military.

Credibility.