“This is a great opportunity for us to make sure that all companies are reassured that when you come to the United States, you’ll know what the rules of the game are."

South Korean Foreign Ministry spokesperson Lee Jaewoong described the number of detained South Koreans as “large” though he did not provide an exact figure.

The South Korean government said Friday it had expressed "regret" to the U.S. Embassy over the raid at a battery plant under construction at one of the state's largest…