KIEV/TBILISI, Aug 27 (Reuters) - Ukraine said on Wednesday it wanted to discuss charging Russia more for the lease of a Black Sea naval base, a move that could aggravate regional tensions already enflamed by Moscow’s conflict with Georgia.

As the US Navy shipped in humanitarian supplies to Georgia, Russia said its navy was watching ”the build-up of NATO forces in the Black Sea area” and had started taking measures to monitor their activity.