Oligarch's arrest deepens fears over Russian economy

``What will be particularly worrying for businessmen in Russia is that Yevtushenkov, unlike Khodorkovsky, was in no way a political figure. Khodorkovsky was widely regarded as challenging the unwritten rule that Putin imposed on the oligarchs when he took over: stay out of politics and you can keep your fortunes. The Yukos head began to finance opposition political parties and complained about official corruption at Kremlin meetings; his opponents in the Kremlin saw the chance to move against him.'' -- Is Putin over-reaching here?