Vladimir Putin is facing an economic crisis on multiple fronts as the rouble collapses and inflation soars. The head of the Russian Central Bank, Elvira Nabiullina, looks set to compound Moscow's economic misery further as she warns that inflation is continuing to rise. She warned on Wednesday that interest rates may have to be hiked further but added that the decision is “not predetermined.” Ms Nabiullina said: “We have indicated that the Central Bank is open to the possibility of raising the rate, but I want to emphasise that this is not predetermined. "Yes, there is a new pro-inflationary factor,...