The RS-24 Yars (Π Π‘-24 Π―ΡΡ β ΡΠ°ΠΊΠ΅ΡΠ° ΡΡΡΠ°ΡΠ΅Π³ΠΈΡΠ΅ΡΠΊΠ°Ρ (strategic missile)-modification 24) also known as Topol-MR, NATO reporting name SS-29 or SS-27 Mod 2), is a Russian MIRV-equipped, thermonuclear armed intercontinental ballistic missile first tested on May 29, 2007, after a secret military R&D project.