In Greek mythology, Cratos ("strength") was a son of Styx and Pallas, brother of Nike, Bia and Zelus. He was the personification of strength and power. Cratos and his siblings were all companions of Zeus.
The spelling Kratos would be more faithful to the original Greek spelling, which is Κρατος.
... Sakhalin and the neighoring Kurile Islands remains disputed, no final peace treaty having been signed.
Its orography and geological structure are imperfectly known. ...