Bitcoin fell below $80,000 after Yemen's Iran-backed Houthi movement attacked four Saudi cities and energy facilities, pushing crude prices toward $100 a barrel and raising concerns about broader Gulf supply disruptions. BTC traded near $78,300, down 1.52% in 24 hours but up 20% over 30 days, while TradingView data later showed a low near $77,600, its lowest level since September 3. Brent futures reached $99.46 and spot Brent touched $101, with other intraday reports placing Brent above $100 before it traded near $98-$99 and WTI around $93-$95. Saudi Arabia halted operations at some facilities, including the Jazan refinery, although the effect on production remained unclear. Slower traffic through the Strait of Hormuz and continued Red Sea shipping attacks added to supply risks, while stronger-than-expected August payrolls and potentially higher energy prices complicated the Federal Reserve's September 15-16 policy decision.