Oil dives on soothing words from U.S., Iran and on U.S. crude build

NEW YORK (Reuters) - Oil futures fell near 4% on Wednesday in a wild swing, soaring close to a four-month high in early trade on an Iranian rocket attack on U.S. forces in Iraq but then retreating as the countries quickly ratcheted back tensions.Prices fell further as it became evident that the rocket attack did not damage oil facilities, and more pressure came from a U.S. government report showing a surprise build in crude stockpiles."No Americans were harmed in last night's attack by the..