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

The reaction was noticeably different on Friday than it was after the last time Israel attacked Iran, when several countries provided backup and resources.

Israel signaled no letup in its campaign to destroy Iran’s nuclear capabilities, with risks in the oil-rich region rising as the nations bombarded military and civilian targets alike.

With their air defenses shredded, allies sidelined and stockpile of missiles running down, Iran's theocratic leaders face the prospect of having to submit to a tougher deal on their nuclear program as their only way out of a worsening situation.

More details are emerging about the rising conflict between Israel and Iran over its nuclear program. CBS News' Courtney Kealy breaks down the latest on Israel's operations and the reported damage in Iran.