Arminkh,
I would challenge you to find an instance where the US DIDN'T take Iranian AshM programs/designs seriously.
I would contend that Chinese and Iranian AshM developments have been a primary driver behind the increased use of the SeaRAM system in conjunction with/in place of the Phalanx over the last decade, whether the USN wants to admit it or not.
Actually it was more of threat of Soviet anti ship missiles. But Chinese and Iranian anti ship missiles not that much different from its purpose.
https://en.wikipedia.org/wiki/RIM-116_Rolling_Airframe_Missile
The
RIM-116 Rolling Airframe Missile (
RAM) is a small, lightweight,
infrared homing surface-to-air missile in use by the
American,
German,
Japanese,
Greek,
Turkish,
South Korean,
Saudi Arabian, and
Egyptian navies. It was intended originally and used primarily as a
point-defense weapon against anti-ship
cruise missiles. The missile is so-named because it rolls around its longitudinal axis to stabilize its flight path, much like a bullet fired from a
rifled barrel. It is as of 2005 the only
U.S. Navy missile to operate in this manner.
[2]
The RIM-116 was developed by
General Dynamics Pomona and Valley Systems divisions under a July 1976 agreement with
Denmark and
West Germany (the General Dynamics missile business was later acquired by
Hughes Aircraft and is today part of
Raytheon). Denmark dropped out of the program, but the
USN joined in as the major partner. The Mk 49 launcher was evaluated on board the destroyer
USS David R. Ray in the late 1980s.
[2] The first 30 missiles were built in
FY85 and they became operational on 14 November 1992, on board
USS Peleliu.
The Rolling Airframe Missiles, together with the Mk 49 Guided Missile Launching System (GMLS) and support equipment, make up the RAM Mk 31 Guided Missile Weapon System (GMWS). The Mk-144 Guided Missile Launcher (GML) unit weighs 5,777 kilograms (12,736 lb) and stores 21 missiles. The original weapon cannot employ its own sensors prior to firing so it must be integrated with a ship's combat system, which directs the launcher at targets. On American ships it is integrated with the AN/SWY-2 Ship Defense Surface Missile System (SDSMS) and
Ship Self Defense System (SSDS) Mk 1 or Mk 2 based combat systems.
SeaRAM, a RAM launcher variant equipped with independent sensors derived from the Vulcan Phalanx CIWS, is being installed on Littoral Combat Ships and Arleigh Burke-class destroyers.