Iranians are gripped by fear -- and hope -- as the United States and Israel wage a massive bombardment designed to cripple the country's clerical rulers.

The air strikes since February 28 have decimated much of Iran's leadership, including killing Supreme Leader Ayatollah Ali Khamenei. But they have also resulted in the deaths of hundreds of civilians, according to local humanitarian groups, and destroyed schools and hospitals.

"We were happy with the news of Khamenei's death," a 56-year-old man in Tehran, speaking on condition of anonymity for security reasons, told Radio Farda. "But now these heavy bombings are worrying me. Iran should not be destroyed and disintegrated. I hope the future is bright."

The death of Khamenei, an autocrat who ruled the country with an iron fist for nearly 40 years, was celebrated by some on the streets of Iran. But for many, attention has quickly turned to what comes next.