Brent crude breached $100 a barrel on September 9 as renewed Middle East tensions intensified concerns over energy supplies and inflation. Taiwan Index Futures Night Session reversed from a 117-point gain to a 394-point intraday loss, settling around 46,872 points by approximately 9:00 p.m., down 306 points. Falling U.S. stock futures, uncertainty over a planned Treasury buyback and weaker risk appetite added to the pressure. Analysts said higher oil prices could make it harder for central banks to balance inflation control against economic growth, potentially extending equity-market consolidation. TSMC and semiconductor futures declined, although petrochemical, shipping and selected price-hike concept stocks provided support. Market participants are watching the Middle East conflict and upcoming U.S. inflation data for clues to the next direction.