A giant ash cloud is affecting some flights to and from Australia following a major eruption of the Rabaul caldera in Papua New Guinea.

A volcanic eruption in Papua New Guinea on Friday sent smoke and ash spewing high over the South Pacific island nation, leading some aircraft to alter their flight paths. Mount Tavurvur on East New ...

But Rabaul also became one of the first of many targets – Mosul in Iraq has been one of the latest – where airpower could do tremendous damage and limit enemy operations but could not displace ...