Yemeni Houthi rebels have joined the war. Chaos in the energy markets is intensifying, driving up oil prices. West Texas Intermediate (WTI) crude for May delivery on the NYMEX is trading at $100.90 per barrel , up 1.26%. Brent crude on the ICE exchange for May delivery is priced at $114.90 per barrel , an increase of $2.07 . The Houthis attacked Israel on March 28 in support of Iran. So far, they have carried out at least two attacks using rockets and drones. The transfer of additional US