No sooner had Arkansas Sen. Blanche Lincoln promised to deliver one crucial vote in support of a health care overhaul than she threatened to withhold the next one.

American and Afghan officials have begun helping a number of anti-Taliban militias that have independently taken up arms against insurgents in several parts of Afghanistan.

A bruising debate on health care awaits the Senate after Thanksgiving now that the legislation has cleared a hurdle over Republicans eager to inflict a defeat on President Barack Obama.

After decades of mistrust and sometimes betrayal, Mexican and U.S. authorities are increasingly setting aside their differences to unite against a common enemy.

Prices have dipped, but some sellers are certain their nine-figure properties will attract buyers.