Oil prices rise to five-week high on US-Iran attacks, Houthi blockade threat
By Scott DiSavino NEW YORK, July 21 (Reuters) - Oil prices climbed about 2% on Tuesday to a five-week high, on worries that energy supply disruptions could worsen in the Middle East due to more attacks between the U.S. and Iran and a threatened naval blockade of Saudi Arabia by Yemen's Houthis.