Japan’s Mitsubishi Heavy Industries won a multi-billion dollar deal to build a fleet of advanced naval frigates for Australia, boosting Tokyo’s ambitions to become a major exporter of military equipment and develop its defense sector.

Japan’s Mitsubishi Heavy Industries will deliver the first of Australia's new navy frigates under a A$10 billion ($6.5 billion) deal, Australian Deputy Prime Minister Richard Marles said on Tuesday. T

Japan relationship has evolved rapidly in the past decade – and this could be threatened if something doesn’t go right with the deal.