U.S. crude climbed less than a dollar on Friday but finished down more than 2 percent for the week, marking the first time the benchmark has fallen for six straight weeks since December 1998. The Friday rally was driven in part by geopolitical tremors in Ukraine and the dollar backing off of its four-year high. Brent crude futures settled up 53 cents at $83.39 per barrel on Friday but declined nearly 3 percent for the week, the seventh straight week down. The last time Brent fell for seven straight weeks ended in November 2002. The benchmark hit a four-year intraday low of $81.63 on Wednesday, down from a high above $115 in June. U.S. crude settled up 74 cents per barrel for the day at $78.65. The dollar helped drive both the daily gains and the weekly losses, as Friday it […]