The correct answer is (b) Japan.
The United States has approved the sale of armed drones to four countries: the United Arab Emirates, Morocco, Poland, and Taiwan. The sale of drones to Japan was blocked by Congress in 2018.
The United Arab Emirates is a close ally of the United States and has been a major buyer of American weapons. The UAE has used drones in its military operations in Yemen and Libya.
Morocco is another close ally of the United States and has been a major buyer of American weapons. Morocco has used drones in its military operations in Western Sahara.
Poland is a NATO member and has been a major buyer of American weapons. Poland has used drones in its military operations in Iraq and Afghanistan.
Taiwan is a self-governing island that China claims as its own. The United States has sold Taiwan billions of dollars in weapons in recent years, including drones. Taiwan has used drones in its military exercises.
The sale of drones to these four countries is a sign of the growing importance of drones in warfare. Drones are becoming increasingly sophisticated and are being used for a variety of missions, including surveillance, reconnaissance, and targeted strikes.