Is it a missile? Is it a drone? What’s the Pelican used by Ukraine?

Ukrainian President Volodymyr Zelenskyy announced that a large-scale strike on Russia involved several weapons, including a 'Pelican' for the first time. This attack hit key Russian oil industry facilities and resulted in at least three deaths. Military analysts are questioning the nature of the Pelican, which could be a tactical ballistic missile or a drone.