One month. That's how long it has taken the Russian Wikipedia to close the gap of approximately 6,000 articles with the Spanish Wikipedia. RusWiki has expanded by more than 14,000 articles since Jan. 26 while the SpanWiki managed approximately 7,000. If the Russian tide continues, we will have another million-article Wiki within a couple of months.
Feb. 25 article count
Russian Wikipedia: Сейчас в Википедии 972 032 статьи на русском языке.
Spanish Wikipedia: 971 969 artículos en español.