New York/Bengaluru/Singapore, Sept. 9 -- Oil prices rose to a six-week high on Tuesday after Iran-backed Houthis in Yemen attacked Saudi energy facilities, setting oil installations ablaze and threatening a major expansion of the six-month-old West Asia war. Brent crude futures rose 70 cents, or 0.7%, to $97.70 a barrel at 10:56 a.m. EDT (1456 GMT), while US West Texas Intermediate (WTI) crude rose $1.21, or 1.3%, to $92.69. That puts Brent on track for its highest close since July 23 and WTI on track for its highest close since June 4. The Houthis attacked four cities of US-ally Saudi Arabia on Tuesday, wounding over 70 people. Houthi-controlled media reported that Saudi warplanes had carried out four airstrikes in Yemen's Jubah district.P...