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

Israel unleashed airstrikes across Iran for a third day and threatened even greater force as some Iranian missiles evaded Israeli air defenses to strike buildings in the heart of the country.

Iran has told mediators Qatar and Oman that it is not open to negotiating a ceasefire while it is under Israeli attack, an official briefed on the communications told Reuters on Sunday, as the two foes launched fresh attacks and raised fears of a wider conflict.

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.

Israeli Prime Minister Benjamin Netanyahu is on the mission of his lifetime. For years, the veteran leader has made the destruction of Iran’s nuclear program his top priority.

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,

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