Rouble stable, but S&P downgrade warning weighs

MOSCOW (Reuters) - Russia's rouble stabilised on Wednesday, as exporters selling foreign currency countered the effect of a ratings agency saying it could downgrade Russia's sovereign debt to 'junk' status as soon as next month. At 1310 GMT, the rouble was around 0.3 percent weaker against the dollar at 54.65 . It lost 0.6 percent versus the euro to 66.85 but traded in narrow ranges against both currencies in thin afternoon trading. ...