The ruble headed for its worst week in 15 years, approaching 50 per dollar for the first time, as the central bank abstained from supporting the currency amid an oil slump and as Ukraine's east lurched back toward war.
Bloomberg: Ruble set for worst week since 1999 amid Ukraine, oil pressures
A Russian ruble coin is pictured in front of the Kremlin in in central Moscow, on Nov. 6, 2014.
