Complex sentence: The airstrikes began on 30 August, initially targeting the VRS's air defences, and striking targets near Sarajevo, before suspending the campaign on 1 September, by then expanded to artillery and storage facilities around the city.
Split into simpler sentences: The airstrikes began on 30 August, initially targeting the VRS's air defences, and striking targets near Sarajevo, before being suspended on 1 September. By then, the campaign's scope was expanded to include artillery and storage facilities around the city.