Defence Industry Minister Pat Conroy warned of challenging times ahead. The government is working to secure fuel supplies. The longer the Strait of Hormuz remains closed, the more difficult the situation for Australia. Foreign Minister Penny Wong will visit Japan, China, and South Korea this week to coordinate with regional partners. South Korea is a major supplier of diesel and petrol. Japan and China also supply a portion of diesel. China supplies up to 30% of Australia's jet fuel. Most regional refineries rely on Middle East oil, raising concerns about export reductions. Any changes to exports would impact Australia.