NBC News' Matt Bradley reports from Israel where sirens rang out across Tel Aviv after missiles were reportedly launched from Iran. The order for residents to take cover was lifted about 15 minutes later.

Truckloads of aid are on their way to the city of Bat Yam, south of Tel Aviv — where at least nine Israelis were killed by a missile strike on Sunday — as well as Haifa and other communities targeted by Iran’s ferocious missile barrage over the past four days.

In Lebanon, which is still reeling from last year’s war between Israel and the Hezbollah militant group, videos making the rounds on social media have shown revelers dancing and drinking on rooftops while projectiles flash across the sky in the background.

A rare daytime missile barrage on Tel Aviv forces millions into shelters as Israeli forces retaliate against Iran's missile-launching capabilities.

NBC's Matt Bradley said Monday night was "quite a bit less terrifying" than Friday, Saturday or Sunday, and the Iranians could be "running out of steam." "According to the IDF, last night was the lightest Iranian assault on Israel since this all began with Israel’s attacks against Iran on Friday morning,

Airlines are continuing to cancel flights to the Middle East in response to an escalating conflict in the region.

At least seven people were killed and more than 100 injured when an Iranian ballistic missile hit Bat Yam, just south of Tel Aviv, overnight on Sunday, domestic media reported. Other reports put the death toll at six people. Israel's police said residential buildings took a "direct hit that caused extensive damage."

The conflict between Israel and Iran has forced many countries in the Middle East to close their airspace, as Israeli jets and Iranian exploding drones and missiles fly over their night skies.