Earlier, two oil tankers were hit in suspected attacks in the Gulf of Oman and crews evacuated, a month after a similar incident in which four tankers in the region were struck.

Both were hit 'at or below the water line in close proximity to the engine room while underway' in what is being described as a well planned and co-ordinated attack. Both ships were abandoned after the blasts. There are reports of mines in the water beside one of the vessels.

A fifth of the world's oil from the middle east passes through the Gulf of Oman for our fuel supplies to be maintained. Oil prices have already surged 4% with the belief that oil supply may be in jeopardy. It won't take long for petrol prices, already out of control in Australia, to rise further out of control, in response as we only have limited reserves of fuel in this country.

No one has claimed responsibility or explained how the tankers were attacked.

Confirmed as the work of Iran by US Secretary of State Mike Pompeo, based on intelligence regarding the types of weapons used and the level of expertise required to execute the strike.

Oil prices have jumped just after the incident out of fears supplies will be reduced.

Israeli media have referred to the attacks as a "massive escalation".

The Iraq weapons of mass destruction taught us to be cautious of unproven pretexts justifying war, but someone is responsible for these strikes, and if that interrupts our oil supplies to Australia, then this has significant potential to damage our country. It is in everyone's interest worldwide to determine conclusively who is responsible for these unprovoked attacks.