Published: Nov 14, 2010 9:51 PM EST
Updated: Nov 14, 2010 6:51 PM EST

YOKOHAMA, Japan (AP) - President Barack Obama has returned to Washington after his longest foreign trip as president.
      
The results of his 10-day Asian tour were mixed.

His first two stops were marked by diplomatic successes. In India, he sealed $10 billion in commercial deals and delighted his hosts by voicing his support for a permanent Indian seat on the U.N. Security Council, while first lady Michelle Obama who won hearts by visiting with schoolchildren.
      
His stop in Indonesia was brief, but Obama spoke to an appreciative audience of college stundents in a city, Jakarta, where he'd lived as a boy.
      
But things began to sour in South Korea, where Obama and President Lee Myung-bak were unable to announce a  free-trade deal. At the G-20 summit, he heard criticism of the Federal Reserve's cash injection into the U.S. economy and failed to win the backing for a tougher approach toward China over on its currency policy.
      
The final event, a summit of Pacific rim countries in Japan, proved uneventful.
      
Obama now faces a number of challenges back in Washington, with a lame-duck session of Congress expected to feature a showdown with Republicans over extending Bush-era tax cuts.