Iran’s continued missile strikes on Israel demonstrate Tehran’s ability to regroup swiftly, even after the killing of multiple top military commanders in an earlier Israeli attack, an analyst told CNN.

“They (Israelis) underestimated the Iranian ability to regroup after the Israelis very successfully targeted the top leadership of the Iranian military and managed to kill several of them,” said Trita Parsi, vice president of the Quincy Institute for Responsible Statecraft.

Parsi stated that Israel had believed it had “disrupted Iranian command and control,” but this notion was “quickly restructured.”

“What we are seeing now is that Iranian missiles are successful in penetrating all layers of Israel’s air defence systems,” he added.

Parsi’s remarks came as new waves of Iranian missiles struck multiple locations in Israel in the early hours of Monday morning.

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Casualties are rising on both sides as the conflict between Iran and Israel escalates. In Iran, residents of Tehran are reportedly fleeing the capital in search of safety.

Meanwhile, in Israel, explosions lit up the night sky as fires broke out and residential buildings were struck.

The latest developments come after Israel’s unprecedented Operation Rising Lion last week, in which it killed Iran’s highest-ranking military officer, the head of its elite Revolutionary Guards Corps, its air force commander, and a former national security chief.