کره جنوبی اولین سلاح مافوق صوت توسعه یافته داخلی خود را آزمایش کرد

South Korea test-flies its first domestically developed hypersonic weapon

The test follows North Korea's recent hypersonic missile test. Tensions between the Koreas have increased after land mine explosions injured three South Korean soldiers near the border. North Korea denies responsibility.