Oil prices moved higher for a second straight day as renewed attacks involving the United States and Iran added fresh pressure to global energy markets. Traders focused on the risk that military action could disrupt crude movements through important shipping lanes.

Brent futures climbed by $1.06, or 1.17%, to $91.80 a barrel, extending the latest rise. The move reflected concerns that any interruption to tanker traffic or regional oil flows can quickly tighten supply expectations and lift benchmark prices.

The market reaction shows how sensitive oil remains to geopolitical tension in areas tied to major export routes. When conflict threatens transport corridors, buyers and sellers often price in the possibility of delays, higher shipping risks, and reduced availability in the near term.

For now, the second day of gains points to a market closely tracking developments between Washington and Tehran. As long as attacks continue to raise uncertainty around key shipping routes, oil is likely to remain supported by concerns over disrupted supply.