At first, Moscow denied a visit ever took place, but after Netanyahu's office was forced to admit to the PM's Military Secretary Meir Kalifi's lie, a senior Kremlin source also confirmed to Kommersant that the Israeli prime minister did indeed visit the city. 

The paper then quoted what it called an "informed" Israeli source, who wished to remain anonymous, as saying, "Such a visit could be related to new information and could threaten the Iranian nuclear program. It should not be ruled out that Israel may be ready to move on to decisive actions with regards to Iran, and Netanyahu has decided to inform the Kremlin of this." 

Russian Foreign Minister Spokesman Andrei Nesterenko published an announcement saying, "We have no knowledge of a Netanyahu's 'secret' visit to Moscow. We saw reports in various media. They are inconsistent. Other than that, I cannot tell you anything. I have no detailed information in the matter, or any information in the matter. We have seen the reports." 

Wednesday night the Prime Minister's Office published yet another announcement in an attempt to rectify the damage, said, "The prime minister was busy with secret, classified activity. The military secretary took his own initiative to defend this activity."