The trade sanctions are retaliations for Australian government effective banning of the China's investment and thus stopping the 2016 FTA unilaterally in the first place. The Yankee, French and British choke points are everywhere in the Indo Pacific islands and you only see the Chinese ones because of your perception in the first place. The best and quickest way to lose the national security is to spend $360 billion to $500 billion in the water and nothing came out of the a soon-to-be bankrupt US shipyard.
