Crude oil futures fell after Iranian leaders signaled a willingness to negotiate a ceasefire in the conflict with Israel, easing fears of a disruption to crude supplies from the region.

Israel and Iran attacked each other for a fifth straight day on Tuesday, and U.S. President Donald Trump urged Iranians to evacuate Tehran, citing what he said was the country's rejection of a deal to curb nuclear weapons development.

As Israel and Iran exchanged more attacks, stock markets mostly rose even as worries remained about possible oil supply interruptions.

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.

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.

Iran and Israel continued on Sunday their aerial attacks, which began Friday with a series of Israeli strikes on Iran.

President Donald Trump vetoed a plan presented to the U.S. in recent days to kill Iranian supreme leader Ayatollah Ali Khamenei, according to a U.S. official familiar with the matter