Action Economics ( AE ) said the dollar index moved to one-week highs overnight. The improved risk taking backdrop has aided the greenback, while prospects for a December Fed rate hike, despite cooler U.S. inflation, should continue to support, AE added. Meanwhile, oil was in the green, and AE said clashes between Iraqi and Kurdish forces in oil-rich northern Iraq have supported prices this week, though a firmer dollar this morning may bring a pause to the recent crude rally.