Oil hits multi-week highs after Houthi attacks on Saudi energy facilities
By Anushree Mukherjee Sept 8 (Reuters) - Oil prices hit multi-week highs on Tuesday after Iran-backed Houthis attacked Saudi energy facilities and Tehran threatened the United States with "economic warfare". Brent crude futures were up $2.00, or 2.06%, at $99.00 a barrel by 0800 GMT. U.S.