CREATE TABLE table_11251601_2 (carbon_dioxide_emissions_per_year__10_6_tons___2006_ NUMBER, country VARCHAR2)

HOW MANY TONS OF CO2 EMISSIONS DID RUSSIA PRODUCE IN 2006?
SELECT MAX(carbon_dioxide_emissions_per_year__10_6_tons___2006_) FROM table_11251601_2 WHERE country = "Russia"
SELECT MAX("carbon_dioxide_emissions_per_year__10_6_tons___2006_") FROM "table_11251601_2" WHERE "Russia" = "country"