Oil gains after Iran tensions, stocks at seven-week highs

NEW YORK (Reuters) - Oil prices built on recent gains on Friday on fears any U.S. military attack on Iran would disrupt flows from the Middle East, while a gauge of global stock markets hovered near seven-week highs following a run spurred by optimism over monetary policy.Gold prices climbed to near six-year highs and were on track for their best week in three years.Central banks have dominated economic news this week, with the Federal Reserve signalling the potential for a U.S. interest rate..