Massive explosion rocks Tehran as Israel says it is targeting ‘heart’ of city

• A massive explosion struck Tehran, with the Israeli military stating it is targeting the "heart" of the Iranian capital.
• This follows Iran's vow of retaliation for the killing of Supreme Leader Ayatollah Ali Khamenei by the United States and Israel.
• Iran has fired missiles at targets in Israel and Gulf Arab states, while the US President threatened severe repercussions if Iran escalates further.
• Key Iranian officials, including the army chief of staff, defence minister, head of the Revolutionary Guard, and a top security adviser, were killed in subsequent air strikes.
• The conflict has led to regional instability, including attacks on the US Consulate in Pakistan, disrupted flights, and casualties in the UAE, Saudi Arabia, and Jordan.