MKsport developing bio, chemical weapons. Graphic: Zhao Jun/GT" src="https://www.globaltimes.cn/Portals/0/attachment/2022/2022-02-13/ff26c77b-2ebe-46c4-a909-b61d0f1a3872.jpg" />US' dirty records of using, developing bio, chemical weapons. Graphic: Zhao Jun/GT