Chinese drones are reported to have violated Vietnam’s airspace twice recently. According to the Voice of America (VOA), this is believed to be in response to growing cooperation between the two Southeast Asian countries and a recent joint Coast Guard training exercise. Through the Nine-Dash Line (called the “Cow’s Tongue Line” in Vietnam), China lays claim to large maritime areas internationally recognized as part of the Philippines and Vietnam. China is second in fighter jet production to the United States and is increasingly exerting control in the region.