The initial test launch of the RS-26 ICBM from the Plesetsk Cosmodrome on September 28, 2011, fell through, with the missile veering off course and landing just eight kilometers from the launch site. All subsequent tests in 2012, 2013 and 2015 proved successful.
Currently it is unknown whether this missile carries a single warhead or Multiple Independent Re-entry Vehicles (MIRVs). Both configurations were tested in 2013.
Rubezh is more accurate than current ballistic missiles and is capable of penetrating even the most sophisticated missile defenses.
The RS-26 Rubezh is expected to become operational in 2016.
The Russian Strategic Missile Forces RS-26 Rubezh (also known as Avangard) is a Russian solid-fueled, MIRV-equipped, thermonuclear intercontinental ballistic missile with reported hypersonic warheads in advanced stages of development as of early 2015, based on the previous RS-24 Yars.
However it has a different weight class and is smaller than current Russian Topol-M and Yars intercontinental ballistic missiles. In terms of dimensions it is similar to the new Russian submarine-launched Bulava.