In tactical and technical characteristics, Russia's anti-ship missile, Circus, beyond US standard rocket (SM-6). Weapons are compared by Western Military Watch (MWM).

The publication has commented on the recent test launch of SM-6 rocket, made by the US military from the Bradshaw training ground in Australia on a surface target. The launch was widely explained by analysts as a protest against the force against China, the capabilities of the navy were growing rapidly, which increasingly weakened the dominance of the US Navy.
There, it is also noted that the range of a missile carrying a 64 kg combat unit is estimated to be 450 km and the speed of the flight is over 3.5 numbers. The publication recalls that Chinese anti-ship missiles YJ-21 range about 1,500 km and the speed is from 6 to 10 meters.
Although the SM-6 speed of 3.5 is high according to the standards of the Western anti-ship missile, it is still much lower than the new Chinese anti-ship missiles and even Russia, such as Zircon Zircon, and completely in the capabilities of air defense systems, like HHQ-9, said.
The publication also noted that SM-6 cannot fly low on the surface of the sea, which will reduce its probability of detection with the radar and are quite expensive (more than four million dollars per unit).
In May, the version of 19Fortyfive noted that the United States was late for an ultrasonic weapon race, very backward from Russia.