Russia and Ukraine agreed on Sunday to resolve their gas dispute, with an understanding that prices would be pegged to the price of oil. The two countries aimed to sign the agreement that would restore natural gas shipments to Europe.

After two weeks' fight, the "natural gas row" between the two countries has not only bilateral but also multilateral repercussions, reflecting four aspects of the relations.

The first is the relation between the natural gas price and the global financial crisis.