Authors supporting the Stalin 1941 assault thesis are Valeri Danilov,[58] V.A. Nevezhin,[59] Constantine Pleshakov, Mark Solonin[60] and Boris Sokolov.[61] Although the USSR attacked Finland, no documents have been found to date which would indicate 26 November 1939 as the assumed date for the beginning of provocations or 30 November as the date of the planned Soviet assault.[62]