Oil spill occurs in Tatarstan over an area of 2,000 square meters -- regulator - Russia suffering 'environmental catastrophe' after oil spill in Kerch Strait - Oil spill in Krasnodar Region contained -- monitoring data - Oil spill devastates Black Sea: long-term impact expected to last over 20 years - 'An ecological disaster': Russia deals with aftermath of massive fuel oil spill - Oil spills in Russian-occupied Crimea are an 'ecological disaster' - Damage after fuel oil spills may continue growing -- lawmaker - Oil spill near Black Sea after two Russian tankers seriously damaged in storm - Oil spill in Kerch Strait after two Russian oil tankers seriously damaged in storm