While the world is desiring an end to the war in the Middle East, the killing of the Iranian security head, Ali Larijani, has ushered the region into a more chaotic situation in the third week of the conflict.

Larijani, a close aide of late Ayatollah Ali Khamenei, was a key figure in Iran and was Tel Aviv's "target number 2" after Khamenei, who was killed in the February 28 strikes, according to a report by The Jerusalem Post.

Despite a large hierarchy and several crucial targets, including the new Supreme Leader Mojtaba Khamenei, Larijani's back was preferentially painted with a target because of his strong grip over security matters and his widely acknowledged persona as a backroom powerbroker. He crafted Iranian security policy and was key in architecting its response, in the wake of Ayatollah Khamenei's death, including targeting the Gulf neighbours.

And like every other assassination, the question that arises this time is how a person managing strategic and security affairs was located in the first place.

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Pursuing Larijani was not easy for Israel. Being at the helm of the security apparatus and overseeing military response, Larijani was well aware of the risks it carried, especially after Khamenei's death.

And hence, he kept changing his locations in past two weeks. This helped him to remain one step ahead of Tel Aviv.

According to a report by Iran International, Israel was getting tips from the Iranian residents. The report cited an Israeli official saying that his country thought of digging information from natives came after Larijani emerged in public view to defy threats of the strikes.

His daylight appearances in rallies and interactions with the media exposed him to public view. He was identified and became vulnerable. On Tuesday, days of Israeli intelligence yielded a response when he was ultimately located while visiting his daughter in Tehran's Pardis.

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Upon confirmation, strikes were authorised, and he was killed along with his son, a deputy and several others.

Following his death, Tehran has once again pledged to take revenge. Iranian Armed Forces chief Amir Hatami said that Tehran's response to the high-profile killing will be both "decisive and regrettable".