By Tom Wilson and Koh Gui Qing LONDON/NEW YORK (Reuters) – The U.S. and European equities rally paused on Wednesday as investors took stock of economic and geopolitical risks, while oil prices jumped back around $4 on the prospect of more Russian sanctions. The broad Euro STOXX 600 fell 0.6% after three positive sessions that had taken the index back to levels reached before Russia invaded Ukraine. By late morning, the Dow Jones Industrial Average had lost 0.18%, to 35,229.04, the S&P 500 was down 0.25%, and the Nasdaq Composite was little changed. The MSCI world equity index, which tracks sha…