It is turning out to be the on-again-off-again deal to resolve the gas row between Russia and Ukraine.Gas monopoly Gazprom says Ukraine has now signed a new copy of an agreement over monitoring the transit of gas via Ukraine. Yesterday the Russian President said the deal was off because Kiev had added conditions. But now Moscow says the agreement has been signed without conditions. This is not the first time the deal has been in dealt, but fingers are crossed that full supplies can now be resumed. The presence of EU monitors in Ukraine is aimed at resolving a dispute that saw Russia cut off supplies because of what it said were unpaid bills. Moscow claimed that Ukraine then began stealing gas destined for Europe, to make up for its own shortfall. Kiev denied the accusations. A fifth of the European Union’s gas comes via Ukraine, and Brussels had little choice but to step in as mediator.