SINGAPORE (Standard&Poor's) Aug. 18, 2015--Standard&Poor's Ratings Services said today that the bomb attack in Bangkok on Monday night has limited immediate impact on the sovereign credit support for Thailand. Our sovereign credit ratings on Thailand (foreign currency BBB+/Stable/A-2; local currency A-/Stable/A-2) are unaffected. Nevertheless, the attack has increased uncertainties over political stability and will put additional pressure on near-term economic prospects. Weaker tourism trade at least in the next two to three quarters will likely hurt Thailand's economic growth. The explosion could have a longer-lasting impact on visitor numbers compared with previous incidents in the past decade. We expect tourists to be more wary this time as the incident appeared to be aimed at creating casualties