Russia has long pursued short-range ballistic missiles. While the SS-1 Scud, which has been widely exported and copied by various countries (including a certain rogue regime) is the most famous, there have been some new technologies emerging lately.
The most notable of these systems is the 9K720 Iskander missile, or the SS-26 Stone as NATO calls it. It's also arguably one in a series of violations of the 1987 Intermediate Nuclear Forces Treaty between the Soviet Union and the United States that has prompted the United States to develop a new ground-launched cruise missile. The INF Treaty banned the development of missiles with ranges between 300 and 3,400 miles.
A 9K720 Iskander, also known as the SS-26 Stone. (Image from Wikimedia Commons)
GlobalSecurity.org reports that the Russians are claiming the deployment of the Iskander system to Kaliningrad is a response to America's deployment of Aegis Ashore, a land-based version of the Aegis Combat System, to Poland and Romania.
The Aegis Ashore system uses the same AN/SPY-1 radar and Mk 41 vertical launch systems present on board Ticonderoga-class guided-missile cruisers and Arleigh Burke-class guided-missile destroyers. The Mk 41 is also capable of firing BGM-109 Tomahawk cruise missiles. However, the United States destroyed its stocks of ground-launched Tomahawks to comply with the INF Treaty.
Iskander Transport Loader 9T250, holding two SS-26 ballistic missiles. (Wikimedia Commons)
According to the Center for Strategic and International Studies, the Iskander is capable of releasing decoys and maneuvering to avoid anti-missile systems like the MIM-104 Patriot, which became an icon of Operation Desert Storm. While CSIS credits the missile with a range between 250 and 300 miles, other sources state the missile has a range of just over 300 miles, making it illegal under the INF Treaty.
Watch the video below to learn more about the Iskander/SS-26.