The period from 2016 to 2020 was dominated by the rivalry between China and the United States, and by Australia’s relative position amid this rivalry. At the same time, a debate about how to combat climate change and its role in foreign affairs took place in the backdrop to this great-power rivalry. In this chapter we examine the interaction of political and public commentary around these three issues – the United States, China and climate change – with the insights available from polling data. We also examine how opinion on these issues fed into ongoing and longstanding debates. Our results suggest that there was both continuity and change in public opinion on international affairs between 2016 and 2020. Trust in the two great powers declined significantly. At the same time, support for Australia’s military alliance with the US remained strong. In terms of threat perceptions, concerns around climate change remained high, reflecting a lack of policy certainty and a failure to act decisively at the federal level. Accompanying this steady trend of high concern around climate-based security risks was a sharp increase in the perception of China as a potential threat to Australian security interests.