Moscow, April 2 (IANS): Russian President Vladimir Putin has signed a law terminating four treaties with Ukraine over the Russian Black Sea fleet, the Kremlin press service said Wednesday.

"This federal law comes into force from the day of its official publication," Xinhua quoted the press service as stating.

Russia and Ukraine signed three treaties in 1997 regulating the status and terms of deploying the Black Sea fleet in Sevastopol, a port city in Crimea.

In 2010, the two countries inked a "gas-for-fleet" agreement, with Moscow offering a discount for gas in exchange for extending its lease of the fleet for 25 years.

The Russian State Duma or the lower house of parliament Monday approved a bill annulling the agreements, saying the fleet's status would now be regulated by Russian laws, as the Sevastopol naval base has become Russian territory, though major Western powers have refused to recognise it.

The bill was endorsed Tuesday by the Federal Council, the upper house of the Russian parliament.

Meanwhile, Ukrainian Justice Minister Pavlo Petrenko said Tuesday Kiev would not denounce the agreements.

"In international judicial practice, such actions are unacceptable; such actions are not recognised by international courts. We, for our part, shall not denounce any of these agreements," he told a press briefing.

The Black Sea fleet is one of the four Russian fleets, and has been stationed in Crimea since the Soviet era.