Russian Finance Minister Anton Siluanov told CNBC that Russia would consider giving financial help to debt-ridden Greece—just days after the new Greek government questioned further European Union sanctions against Russia.

Siluanov said Greece had not yet requested Russia for assistance, but he did not rule out an agreement between the two countries if Greece came asking. Read MoreIs Greece about to cosy up to Russia?

Anton Siluanov Andrey Rudakov I Bloomberg via Getty Images

"Well, we can imagine any situation, so if such [a] petition is submitted to the Russian government, we will definitely consider it, but will take into account all the factors of our bilateral relationships between Russia and Greece, so that is all I can say. If it is submitted we will consider it," Siluanov told CNBC in an exclusive interview in Moscow on Thursday. Siluanov's comments come two days after Greece's new left-wing-led government distanced itself from calls to increase sanctions against Russia—indicating that Greece could be looking east to Russia for support. On Tuesday, EU leaders issued a statement calling for "further restrictive measures" to be considered against Russia with regard to its involvement in the ongoing conflict in eastern Ukraine.

After the statement, a representative for Greece's newly elected Syriza party reported that the EU's statement was made "without our country's consent" and expressed "dissatisfaction with the handling of this."

On Thursday, Siluanov said that while Western-imposed sanctions against Russia thus far had been harmful, the country has managed to adapt. "The sanctions that have already been imposed against Russia did have (a) negative effect on us. However, Russia companies have adjusted and the Russian balance of payments has adjusted. (The) ruble weakened and as you might see, life still goes on here and we just keep on living," he said.

Belarus aid?

Siluanov added that Russia was also willing to consider offering extra aid to Belarus, whose economy he described as "closely related" to that of Russia, but he wants reforms pushed through. Belarusian President Alexander Lukashenko warned on Thursday that his country might need to restructure its debt burden, and said that Belarus relied on Russia for help, according to Reuters. He later changed his comments on the debt burden to only mention refinancing, the news agency said. In response, Siluanov told CNBC, "In the case of an emergency, we are ready to consider their request for help."

"Together with our Belarus(ian) colleagues, we are currently looking into the situation. We are analyzing all the factors that affect the current economic situation in both countries, namely the sanctions and the oil prices fall. We are in negotiations right now," he added.



‘Major influence’ oil not sanctions

Severe volatility in oil markets had played a substantial role in weakening the Russian economy, Siluanov said. He estimated that the combined impact of sanctions and oil price weakness on Russia's economy amounted to around $200 billion or "maybe a little more." "The major influence(s) were the oil price falls. Our estimate of sanctions is roughly $40-$50 billion of shortage of capital, but again the main driver of this slowdown is the oil price," Siluanov said. On Monday, Standard & Poor's downgraded Russia's credit rating to BB+, or "junk" grade, for the first time in a decade. "Russia's monetary-policy flexibility has become more limited and its economic growth prospects have weakened," S&P said in a statement.

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