NOW: Iranian air defence active over Tehran, several explosions heard.

The Israeli strikes on Iranian nuclear and military sites were enabled by “breakthrough intelligence” gathered over the past year, says a senior IDF official.

Dedicated IAF and intel units were created to prepare for a large-scale strike, with efforts focused on targeting top Iranian military and nuclear figures.

Iran: Urmia, Maragheh, and Ahvaz under attack now.

NOW: Fourth wave of Israeli attacks underway against Iran.

Iran is yet to respond.

BREAKING: Iran’s Supreme Leader Khamenei:

At dawn today, the Zionist regime committed a heinous crime on our soil, exposing its wicked nature by striking residential areas. It must now await a severe punishment.

By God’s will, the powerful hand of Iran’s Armed Forces will not let this go unanswered.

A number of our commanders and scientists were martyred in the attack. Their successors will immediately continue their mission.

With this crime, the Zionist regime has sealed a bitter and painful fate for itself—and it will surely face it.

Kermanshah today following Israeli airstrikes.

Kermanshah is missile base with a vast underground facility near the Iraqi border, operated by the IRGC Aerospace Force.

Dug into the Zagros Mountains, it serves as a major storage and launch site for Iran’s ballistic missiles.

Note that Khamenei didn't declare a war on Israel.

BREAKING: Reports suggest Maj. Gen. Bagheri, Iran’s top military chief, was killed by Israel.

Iran’s Revolutionary Guards say Israeli attack was carried out with full knowledge and support of ‘wicked rulers in White House and terrorist U.S. regime’.

U.S. seems to be currently evacuating critical aerial assets from Middle East.

Oman says Israel is responsible for ‘this escalation and its consequences’ after attack on Iran.

Oman, a mediator in Iran-US nuclear talks, says Israeli attack ‘threatens to eliminate diplomatic solutions and undermine security and stability of the region’.

BREAKING: Iran’s Atomic Energy Chief confirms: Natanz reactor, one of the country’s most critical nuclear facilities, has been destroyed.

BREAKING: Reports claim IRGC Aerospace Chief Amir Ali Hajizadeh has been seriously wounded.

NEW: Israel's doomsday plane "Wing of Zion" just took off.

It serves to transport the President and Prime Minister on international trips, functioning as Israel’s version of the U.S. Air Force One.

Ahmadreza Zolfaghari, a professor at Iran's Shahid Beheshti University’s Nuclear Engineering Faculty, was killed by Israel.

Clash Report EXCLUSIVE: Iranian IRGC sources say they’ve lost contact with the IRGC intelligence chief, who is feared killed in the Israeli strikes along with other commanders.

BREAKING: Trump confirms he was briefed in advance of Israeli airstrikes on Iran, but says the U.S. had no military role.

“Iran cannot have a nuclear bomb… We hope to return to talks,” he told Fox News.

Trump hinted some top Iranian leaders killed: “Several in leadership won’t be coming back.”

CENTCOM remains on high alert; U.S. will defend itself and Israel if Iran retaliates.

U.S. replenished Iron Dome missiles in recent weeks.

Netanyahu:

First Israeli strikes on Iran were "successful".

Israeli citizens may have to remain in sheltered areas for lengthy periods of time.

An Iranian girl lies buried under the rubble after Israeli airstrikes.