Oil is ending the week near $84 a barrel, up about 20% for the month of July. The market swung between optimism and fear almost every single day. A pause in U.S. strikes early in the week sent prices down sharply. Then the fighting came right back, the Houthi naval blockade of Saudi Arabia got more aggressive, and oil climbed back toward where it started. The pattern of this war keeps repeating itself. Here is what drove the market this week.