DUBAI, United Arab Emirates (AP) — Israel launched an expanded assault on Iran on Sunday, with direct strikes targeting its energy industry and Defense Ministry headquarters, while Tehran unleashed a fresh barrage of missiles blamed for the deaths of four people and injuries of many others.

National security experts warn that Israel's attack on Iran shows why Chinese land and asset purchases in the U.S. pose a significant threat to American security.

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

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.

Explosions reported in capital Tehran as Israeli Defence Minister announces "pre-emptive strike" and announces state of emergency

An Israeli drone has struck a refinery in Iran’s South Pars gas field Saturday, semiofficial Iranian news agencies reported. If confirmed, it would mark the first Israeli attack on Iran’s oil and natural gas industry.