The Avangard is a hypersonic glider, developed by Russia, that can be carried as a MIRV payload by heavy.
Syrian Regime Gets 'Ship Killer' Missiles
(NYTimes) WASHINGTON -- Russia has sent advanced antiship cruise missiles to Syria, a move that illustrates the depth of its support for the Syrian government led by President Bashar al-Assad, American officials said Thursday. Russia has previously provided a version of the missiles, called Yakhonts, to Syria. But those delivered recently are outfitted with an advanced radar that makes them more effective, according to American officials who are familiar with classified intelligence reports and would only discuss the shipment on the basis of anonymity.