Residents piled onto roads heading north to seek shelter from the fourth day of bombardment.

Stocks moved sharply higher Monday morning, recovering from steep losses the previous session, as investors keep close tans on the latest developments in the ongoing conflict between Israel and Iran.

Israel has targeted Iranian energy infrastructure, including the world’s largest gas field, South Pars, which Iran shares with Qatar. CNN’s Becky Anderson speaks with analyst Firas Maksad about how this escalation poses a significant threat to global energy security.

An exchange of strikes on refineries and gas facilities was limited but raised the risks to an industry with broad economic impacts.

An Iranian lawmaker said closure of the Strait of Hormuz, a critical chokepoint in the global energy trade, was under serious consideration.

Israel’s attack on Iranian nuclear and military sites on Friday, and the resulting oil-price surge and airline-stock slump, could pose even more obstacles for consumers navigating an already unusual summer travel season.

Israel launched an expanded assault on Iran on Sunday, targeting its energy industry and Defense Ministry headquarters, while Tehran unleashed a deadly barrage of missiles.

The Israeli military has damaged critical nuclear infrastructure and killed scientists, but Tehran’s most formidable enrichment plant remains.