Israel and Iran launched fresh attacks, killing and wounding civilians and raising concerns of a broader regional conflict.

The Washington-based group Human Rights Activists reported a far higher death toll in Iran from Israeli strikes, saying the attacks have killed at least 406 people and wounded another 654. In recent crises, Iran routinely has undercounted casualties, including in the 2022 mass demonstrations over mandatory hijab laws after the death of Mahsa Amini.

Crude oil futures jumped more than 3% Sunday after Israel struck two natural gas facilities in Iran, raising fears that the war will expand to energy infrastructure and disrupt supplies in the region.

Oil prices climbed on Monday, extending Friday's rally, as renewed strikes by Israel and Iran over the weekend increased concerns that the battle could widen across the region and significantly disrupt oil exports from the Middle East.

U.S. oil prices already jumped last week, which could cause prices at the pump to rise about 20 cents a gallon in the coming weeks, according to one estimate.

Israel unleashed airstrikes across Iran for a third day and threatened even greater force as some Iranian missiles evaded Israeli air defenses to strike buildings in the heart of the country.

Iranian Foreign Minister Abbas Araghchi said Sunday that if the Israeli strikes on Iran stop, then “our responses will also stop.”