Oil futures extended their gains for a seventh straight session on September 9 as escalating military conflict in the Middle East raised concerns about prolonged disruptions to energy supply chains. Front-month October WTI (U.S. crude benchmark) on NYMEX settled $3.02, or 3.2%, higher at $96.05 a barrel after reaching $96.82, its highest front-month level since early June. Brent briefly rose above $100 to $100.46, its highest level since late July. The U.S. Central Command said on September 8 that it had destroyed five Iranian tankers near Kharg Island and the Gulf of Oman. Iran attacked 10 vessels near the Strait of Hormuz on September 9 and launched ballistic missiles at a U.S. military base in Jordan, while Yemen's Iran-aligned Houthi group was reported to have struck energy and civilian facilities in Saudi Arabia. Analysts cited tightening supply risks, with some saying WTI could retest $100 if disruptions materialize, although a global slowdown could weaken demand and volatility is expected to remain elevated. The Strait of Hormuz carries roughly 20% of global crude supplies. Equities fell broadly, Treasury yields rose, and gold gained as investors sought defensive assets. The 10-year Treasury yield reached 4.83%, its highest since November 2023, despite an expansion of the U.S. Treasury's debt buyback program to as much as $6 billion. Casey's General Stores fell nearly 16% after weaker-than-expected same-store sales growth, while Meta Platforms rose 6% after announcing its Muse AI agent.