![This photo shows Poseidon nuclear-powered and nuclear-armed unmanned underwater vehicle during the final stage of testing. Poseidon is a brand new intercontinental range undersea weapon able to destroy enemy naval bases and aircraft carriers. (Photo/Sipaphoto)](http://www.ecns.cn/hd/2018/07/20/0e7e099a06854d408befbeee21c0930c.jpg)
This photo shows Poseidon nuclear-powered and nuclear-armed unmanned underwater vehicle during the final stage of testing. Poseidon is a brand new intercontinental range undersea weapon able to destroy enemy naval bases and aircraft carriers. (Photo/Sipaphoto)
![This photo shows Poseidon nuclear-powered and nuclear-armed unmanned underwater vehicle during the final stage of testing. Poseidon is a brand new intercontinental range undersea weapon able to destroy enemy naval bases and aircraft carriers. (Photo/Sipaphoto)](http://www.ecns.cn/hd/2018/07/20/92b503c13fac46998a850079b31961bd.jpg)
This photo shows Poseidon nuclear-powered and nuclear-armed unmanned underwater vehicle during the final stage of testing. Poseidon is a brand new intercontinental range undersea weapon able to destroy enemy naval bases and aircraft carriers. (Photo/Sipaphoto)
![This photo shows Poseidon nuclear-powered and nuclear-armed unmanned underwater vehicle during the final stage of testing. Poseidon is a brand new intercontinental range undersea weapon able to destroy enemy naval bases and aircraft carriers. (Photo/Sipaphoto)](http://www.ecns.cn/hd/2018/07/20/06b325b2455047548017759803f65d07.jpg)
This photo shows Poseidon nuclear-powered and nuclear-armed unmanned underwater vehicle during the final stage of testing. Poseidon is a brand new intercontinental range undersea weapon able to destroy enemy naval bases and aircraft carriers. (Photo/Sipaphoto)