The Black Sea market remained about unchanged during the past three weeks. The Russian wheat balance sheet looks heavy on paper, but two factors are preventing the export market from falling. Milling Wheat The Black Sea market remained about unchanged during the past three weeks. The Russian wheat balance sheet looks heavy on paper, but the slow farmer selling and firmer ruble are preventing the export market from falling. The weather in Eastern Europe is not currently causing any serious threat. The snow cover in the majority of the region is adequate for protecting the wheat from the wave of extreme cold that crossed over during the weekend.The EU exported 170,000 MT of wheat last week, bringing the total to 12.9 MMT versus 12.7 MMT at...