The earliest gunpowder recipe and primitive weaponry date to Chinas Song dynasty and the oldest extant guns appear in the Mongol-led Yuan dynasty of China. However, historian Tonio Andrade notes that there is a surprising scarcity of reliable evidence of firearms in Iran or Central Asia prior to the late 14th century. He argues that, in the Middle East, no guns are mentioned prior to the 1360s, while Russian records do not contain reliable mentions of firearms until 1382, after the guns arrival in western Europe, despite their closer proximity and interactions with the Mongol empires.