China has issued advisories to its citizens in Israel and Iran of the "complex and severe" security situation in those countries on Friday, adding a warning to those in Israel to prepare for possible missile and drone attacks.

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 and Iran have opened a new chapter in their long history of conflict. Israel launched a major attack with strikes early Friday that set off explosions in the Iranian capital of Tehran.

China was deeply concerned about the Israeli attacks on Iran and urged de-escalation for regional peace and stability, a Chinese foreign ministry spokesperson said on Friday. "China opposes any infringement upon Iran's sovereignty,

Despite not relying on Iran for its oil supplies, petrol and other prices in Australia will rise due to the global impact of the Israel–Iranian war.

Explosions were heard in the Iranian capital, Tehran, as Israel launched a preemptive strike. Israel is under a state of emergency, as Iran retaliated Friday night with missile attacks.

Israel’s leader and President Trump appeared to bet they can persevere, but other world leaders warned of unintended outcomes in a volatile region.

Israeli emergency services have said at least two people were killed in the strikes and dozens of people are injured.