text: Threat
  attacks are expected against C2 nodes; theater and tactical data and voice networks, information systems,
  radars and their tracking and targeting systems, and missile guidance packages. The threat is expected to use
  cyber attacks in conjunction with physical attacks as part of a larger campaign. Cyber threats can prevent
  target detection, tracking, and engagement of threat munitions and platforms. The threat is likely to also
  expand attempts to penetrate networks for data collection and exploitation with a growing sophistication to
  conduct cyber attacks. Strategic organizations, with “on-line” missions, face multiple types of cyber threats
  on a continual basis.
  STRATEGIC MISSILE THREATS THAT MAY IMPACT THE
  THEATER
  3-48. Despite the end of the Cold War, the threat of accidental, unauthorized, or limited strategic strikes
  against the United States continues to exist. ICBMs and SLBMs are a threat to the United States. They carry
  nuclear warheads and employ a variety of penetration aids.
  3-49. ICBMs and SLBMs pose significant challenges to active defense and attack operations forces. Some
  ICBMs are road mobile, reducing the time that they can be targeted, while others are designed with
  countermeasures to ballistic missile defense systems. Some SLBMs may be launched from surfaced and
  submerged submarines from various launch locations.
  INTERCONTINENTAL BALLISTIC MISSILES
  3-50. An ICBM is a ballistic missile with a range greater than 5,500 kilometers and typically designed to
  deliver one or more nuclear warheads. Most modern designs support multiple independently targetable
  reentry vehicles, allowing a single missile to carry several warheads, each of which can strike a different
  target.
  3-51. Although current ICBM-producing countries are limited, several countries are developing production
  capabilities. Thus, the threat to the United States continues to grow. Other countries developing ballistic
  missiles are also likely to build various responses to U.S. defenses. Developing countries would probably
  rely on available countermeasure technologies such as separating reentry vehicles, spin stabilizing reentry
  vehicles, radar absorbing material, low-power jammers, and simple decoys such as balloons.
  3-52. Rudimentary technologies from earlier versions of missiles are more readily available and are adequate
  for use by nations not overly concerned with missile accuracy, reliability, or safety. The increased availability
  of technical assistance from other nations and of classified information related to ballistic missiles and
  weapons of mass destruction will short-cut development programs. Once launched, ICBMs are difficult to
  defeat. Their targets may be strategic or political, civilian or military. ICBMs will most likely use nuclear
  warheads, and many will carry multiple reentry vehicles. Projected ICBM improvements include mobile
  basing, improved reliability, increased accuracy, and improved penetration aids.
  3-53. Iran's progress on space launch vehicles - along with its desire to deter the United States and its allies
  - provides Tehran with the means and motivation to develop longer-range missiles, including ICBMs. In
  April 2016 Iran launched a space launch vehicle, which could be capable of ICBM ranges if configured as
  such. Iran may be able to deploy an operational ICBM by 2020 if the regime chooses to do so.
  3-54. North Korea is developing and has paraded two road-mobile ICBMs which, if successfully developed,
  would likely be capable of reaching much of the continental United States. North Korea launched several
  ICBMs in 2017 and claims to be capable of ranging most of the continental United States with its ICBMs.
  SUBMARINE-LAUNCHED BALLISTIC MISSILES
  3-55. Submarine mobility provides launch location options unavailable to ICBM forces and makes detection
  difficult. SLBMs provide ICBM capabilities with the added advantages of better hiding, shorter flight times,
  and depressed reentry angles. Targets will generally be identical to those of ICBMs. Projected improvements
  include more sophisticated payloads and guidance systems, improved reliability, increased range, and
  improved penetration aids.