Israeli strikes on Iran have killed at least 639 people and wounded 1,329 others, a human rights group said Thursday. The Washington-based group Human Rights Activists released the figures, which covers the entirety of Iran. It said of those dead, it identified 263 civilians and 154 security force personnel being killed.

Human Rights Activists, which also provided detailed casualty figures during the 2022 protests over the death of Mahsa Amini, crosschecks local reports in the Islamic Republic against a network of sources it has developed in the country. Iran has not given regular death tolls during the conflict and has minimized casualties in the past. Its last update, issued Monday, put the death toll at 224 people being killed and 1,277 others being wounded.

Iran's supreme leader on Wednesday rejected US calls for surrender in the face of more Israeli strikes and warned that any military involvement by the Americans would cause 'irreparable damage to them." European diplomats prepared to hold talks with Iran on Friday. The second public appearance by Ayatollah Ali Khamenei since the Israeli strikes began six days ago came as Israel lifted some restrictions on daily life, suggesting that the missile threat from Iran was easing.