Why Did Netanyahu Go To Moscow Monday?

According to The Jerusalem Post, quoting Kommersant:

A senior Kremlin official confirmed Wednesday to the Russian paper Kommersant thatPrime Minister Binyamin Netanyahu did indeed make a clandestine trip to Russia on Monday.

Mystery surrounds Netanyahu's 'secret trip to Russia'

Commenting on the visit, the official said that "this kind of development could only be related to new and threatening information on Iran's nuclear program."

The Russian newspaper quoted experts speculating that such a trip would only be justified under extraordinary circumstances, "for example, in the case of Israel planning to attack Iran."