WorldOil Cub Energy spuds M-23 well in eastern Ukraine Cub Energy Inc. has announced that KUB-Gas LLC--Cub’s 35%-owned subsidiary, which owns and operates the eastern Ukraine licenses--has commenced drilling of the Makeevskoye-23 well. Russia, Ukraine gas agreement warms Europe amid widening glut Ukraine, a dominant gas transit hub, reached a supply agreement Friday with Russia, the European Union’s largest outside supplier of the fuel. Ukraine halts Russian gas purchases as talks on deal fail Ukraine halted purchases of Russian natural gas after its bigger neighbor took away most of a price discount and declined to sign a three-way accord with the European Union through the winter heating season. Russia-Ukraine gas talks set to focus on price as EU seeks deal Russia and Ukraine were poised to wrangle over natural-gas prices at talks brokered by the European Union, which seeks to secure an agreement on supplies of the fuel through at least next winter.