I don't know if the eastern european countries besides maybe ussr count. Many many polish, ukrainian and lithuanians enthusiastically helped the germans in carrying out the holocaust.
On 02.04.2008, Russian State Duma confirmed that 7 million (adults and unknown number of children) died because of artificial starvation in 1932-1934 (Holodomor). Majority of them are Ukrainians. However, Russian Federation refuses to confirm the starvation and FSB agents jail or kill everybody who spreads information about Holodomor. If you are from RF - beware.
Not even close so don't try. There were some powerful positions in the ussr occupied by jews. I'm not sure what role they had in the purges etc. Stalin was definitely not a great lover of jews.
On the other hand in the countries i mentioned above many locals participated in a genocide and murdered their neighbors with their bare hands.
