How is that statement deescalating tension? It's a partisan statement at a time of uncertainty, a verbal attack on Russia without any clarity on what actually occurred yet. The Australian foreign minister called for cool heads and a thorough investigation. That's the sort of rhetoric you want to hear at such precarious juncture in the conflict.
And now we're seeing admissions by the U.S. that Turkey could have been at fault. The U.K. were way to keen to lay blame on Russia. They, as well as NATO have been picking a fight with Russia for a while now.