The Israel Defense Forces said the air force had launched strikes against missile sites in central Iran, as the Middle East conflict entered a fourth day.

The latest salvo comes after a weekend of escalating tit-for-tat attacks between Israel and Iran that raised fears of a wider, more dangerous regional war.

Iran has launched a new wave of missile attacks on Israel, triggering air raid sirens across the country as emergency services reported projectiles striking and shrapnel falling in Israel’s north and center,