The Bureau of Industry and Security (BIS) has made changes to the Export Administration Regulations. This includes adding the China National Offshore Oil Corporation Ltd. to the Entity List due to activities against U.S. national security. The Military End-User (MEU) List now includes Beijing Skyrizon Aviation Industry Investment Co., Ltd., while two entities from Russia have been removed from the MEU List to fix duplicate entries. These decisions aim to strengthen control over exports to entities acting detrimentally to the security and policy interests of the United States.
Simple Explanation
The U.S. government has added some companies to a special list because they did things that could be bad for America. One company from China is now on a "naughty" list, and a few others from Russia were taken off because they were accidentally put on twice.