Netanyahu's military aide, Maj. Gen. Meir Kalifi, was the only Israeli official to dismiss the media reports, saying in a press release Monday night that the prime minister had spent the day at a 'security facility in Israel'.

The head of the Israeli premier's office, Eyal Gabbai, visited Moscow on Tuesday as part of a Jewish Agency tour.

In August, Israeli President Shimon Peres visited the Black Sea resort of Sochi to discuss Russia's arms deals with Iran.

Peres said Medvedev 'gave a promise he will reconsider the sales of S-300s (advanced air defence systems to Iran) because it affects the delicate balance which exists in the Middle East'.