Moody's Investors Service is maintaining a high sovereign credit rating for South Korea, despite the ongoing impeachment trial of President Park Geun-hye and a recent missile test by North Korea.
  
The global rating agency says South Korea is a stable Aa2 --- the third highest rating in the Moody's system.
  
Moody’s upgraded South Korea's credit rating from Aa3 to Aa2 in December 2015, and has kept it unchanged for 14 months.
  
The latest Moody’s rating is the first official opinion announced by an international credit appraiser since the National Assembly passed an impeachment motion against the president in December last year.