Spiro said that several German firms have also steeled themselves for possible fallout from friction between the Russia and the West. "German companies are huge here," said Spiro, naming BASF, energy firm RWE, and Siemens as companies with operations in Russia. BASF is working to finalize a deal with Gazprom that would give it a stake in Siberian oil fields; RWE has reached a preliminary deal to sell its natural gas subsidiary to Russian billionaires Mikhail Fridman and German Khan, and Siemens has a partnership with state-run railroad monopoly Russian Railways. Late last month, Siemens CEO Joe Kaeser made a trip to Moscow to meet with Russian President Vladimir Putin at his residence and voice support for a "trusting relationship" with Russian companies.