In the contemporary world order, one of the most attention-getting issues is the recent consolidation of defense and strategic engagement between China and Russia, specifically since the early 2010s. Throughout a critical juncture angle, this study attempts to explain what led to the reinforcement of these China–Russia relations, and how their strategic ties have evolved. This study argues that the three critical junctures driven by the USA – the US Pivot to Asia, the Ukraine Crisis and the US-led sanctions against Russia, and the US THAAD deployment to Korea – aggravated China and Russia's perception of threat from the USA, which contributed to the incremental China–Russia strategic and defense ties.