KYIV/LONDON, May 10 (Reuters) - Ukraine said on Tuesday it would suspend the flow of gas through a transit point which it said delivers almost a third of the fuel piped from Russia to Europe through Ukraine, blaming Moscow for the move and saying it would move the flows elsewhere. Ukraine has remained a major transit route for Russian gas to Europe even after Moscow's invasion. GTSOU, which operates Ukraine's gas system, said it would stop shipments via the Sokhranivka route from Wednesday, declaring "force majeure", a clause invoked when a business is hit by something beyond its control. But...