Oil price spike clouds U.S. corporate profit outlook, puts investors on edge

NEW YORK (Reuters) - Investors are worrying that rising energy costs due to an escalating conflict between the United States and Iran that has caused a spike in oil prices will hurt U.S. corporate earnings. Oil prices briefly jumped to four-month highs overnight after Iran launched missiles at U.S.-led forces in Iraq, but retreated after signs that further military action may been limited. [O/R] Despite that pullback, oil prices remain nearly 25% higher over the last 12 months, due in part to..