in this photo released by Thailand's Royal Household Bureau, U.S. President Barack Obama, left, talks with Thai King Bhumibol Adulyadej, right, at Siriraj Hospital in Bangkok, Thailand, Sunday, Nov. 18, 2012. (AP Photo/Royal Household Bureau)
Thai King Bhumibol Adulyadej presents U.S. President Obama with a gift for first lady Michelle Obama. (David Nakamura/The Washington Post/White House pool reporter)
U.S. President Barack Obama, center, and Thai Prime Minister Yingluck Shinawatra acknowledge each other at a joint news conference at the Government House in Bangkok, Thailand, Sunday, Nov. 18, 2012. (AP Photo/Carolyn Kaster)
U.S. Secretary of Defense Leon Panetta reviews an honor guard during an arrival ceremony prior to meeting with Thai Minister of Defense Sukampol Suwannathat at the Ministry of Defense in Bangkok, Thailand, on Thursday, Nov. 15, 2012. (AP Photo/Saul Loeb, Pool)
A wooden bridge crosses over the Kok River in northern Thailand’s Chiang Rai province, where minority hill tribes live in villages where their culture is not undiscovered but also is not corrupted by tourism. (Associated Press)
This July 21, 2012 photo shows a Christian church in a hill tribe village in Thailand’s Mae Kok Valley. Thailand is a predominantly Buddhist country, but many members of the northern hill tribes are converts to Christianity who nonetheless retain some of their traditional animist and ancestor worship rituals alongside their Protestant faith. (Associated Press)
Myanmar's opposition leader Aung San Suu Kyi waves from a vehicle to cheering Karen refugees as she tours Mae La refugee camp in Tha Song Yang district, Tak province, northern Thailand, Saturday, June 2, 2012. (AP Photo/Wason Wanichakorn)
Myanmar opposition leader Aung San Suu Kyi (second from right) arrives at a National Verification center for Myanmar migrant workers in Thailand's Samut Sakhon province on Thursday, May 31, 2012. (AP Photo/Wason Wanichakorn)
Myanmar opposition leader Aung San Suu Kyi waves after meeting with Burmese migrant workers in Samut Sakhon province in Thailand on Wednesday, May 30, 2012. (AP Photo/Wason Wanichakorn)
Bajrakitiyabha Mahidol, Princess of Thailand, waits April 23, 2012, for the start of the 21st session of the Commission on Crime Prevention and Criminal Justice at the International Center in Vienna, Austria. She is chairman of the committee. (Associated Press)
**FILE** Thai Explosive Ordnance Disposal (EOD) officials examine Feb. 15, 2012, the damage caused by a blast at the house where suspected bomber Saeid Moradi was staying in Bangkok. Two Iranian suspects arrested in Bangkok after three explosions hit the city were likely planning to attack individuals but did not have the capacity to target large crowds or buildings, Thai police said. (Associated Press)