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.

Smoke and flames filled the sky over Tehran as Israel struck oil and gas facilities in the Iranian capital and targeted more nuclear facilities during attacks that carried on into Sunday after starting two days earlier.

The top Democrat on the Senate Armed Services Committee denounced the Israeli strike as a “reckless escalation” that risks a broader war. “Israel’s alarming decision to launch airstrikes on Iran is a reckless escalation that risks igniting regional violence,

The Israeli attack, which comes amid an unprecedented exchange of strikes between Israel and Ansar Allah's Axis of Resistance coalition ally, Iran, was reported by a number of Israeli outlets as well as Saudi Arabia's Al-Hadath network.

Videos and images verified by NBC News piece together a picture of the deprivation and chaos of Gaza's hospitals.