In a small, tight-knit town near Haifa in northern Israel, residents here never thought they would experience such horror.

By Alexander Cornwell, Parisa Hafezi and Jeff Mason TEL AVIV/DUBAI/WASHINGTON (Reuters) -Iranian missiles struck Israel's Tel Aviv and the port city of Haifa on Monday, destroying homes and fuelling concerns among world leaders at this week's G7 meeting that the battle between the two old enemies could lead to a broader regional conflict.

Jonathan Conricus, a former IDF spokesperson, says Iran is "the weakest that I've ever seen it" after Israel's launch of Operation Rising Lion.

CONFLICT ENTERS FOURTH DAY: Israel and Iran have begun a new round of attacks, as the conflict between the two heavily armed rivals enters its fourth day.

It follows daytime attacks from both sides, with Israeli strikes in Tehran continuing and Iran firing more missiles towards Israel.

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.

Several people were killed when Iran fired a barrage of projectiles at Israel in retaliation for Israel's surprise attack on its foe’s nuclear facilities and military leadership. Follow along for live updates,

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.

The Lebanese militant group Hezbollah was long considered Iran’s first line of defense in case of a war with Israel.