Ahram Online provides live coverage of the unfolding military confrontation between Israel and Iran as the two sides waged deadly strikes against one another for a fourth day.

After a weekend of massive strikes and counter-strikes between Tel Aviv and Tehran, the UN's human rights chief, Volker Türk on Monday condemned the violence and echoed wider calls for a negotiated end to the attacks.

Aerial attacks between Israel and Iran continued overnight into Monday, marking a fourth day of strikes following Israel's Friday attack. That surprise strike hit the heart of Iran's nuclear program, killing several nuclear scientists as well as high-ranking military leaders, according to Israeli officials.

Iranian state media report more explosions, with blasts heard in Tehran, as Israel says its air force is hitting military targets.

Israel launched an expanded assault on Iran on Sunday, targeting its energy industry and Defense Ministry headquarters, while Tehran unleashed a deadly barrage of missiles.