Australia became the latest nation to join the U.S.-led coalition against ISIS on Friday, as its Cabinet authorized airstrikes by Australian military jets in Iraq and the use of its special forces.

Prime Minister Tony Abbott, speaking at a joint press conference with defense chiefs, said ISIS had “effectively declared war on the world” and posed a threat to Australia and its people.

ISIS must be disrupted and degraded, he said, and “it is absolutely in Australia’s national interests that this mission go ahead.”

The Cabinet authorized the deployment of Australian Special Forces into Iraq to “advise and assist” Iraqi forces, Abbott said, subject to final legal approvals from Iraq. Australian aircraft already began flying support missions over Iraq this week.

Australia’s decision to join the military campaign came only hours after Turkey’s Parliament voted overwhelmingly to authorize military force against ISIS in both Iraq and Syria.