South Korea won against Areva in a bid to build four light water reactors. This was a huge victory for the nation as it will bring it recognition in the UAE in addition to proving that it is major world leader in nuclear technology. The reasons cited for the bid being given to South Korea over the French based company of Areva is because Areva has fallen behind schedule and gone over budget in its project in Finland. South Korea also underbid Areva by a significant amount which also was a point in its favor.
For more details, take a look at the Nuke Notes post by Dan Yurman and the original article on the Wall Street Journal.