The study examines Russia–Pakistan cooperation between 2014 and 2026 as a case study of how middle powers and recovering great powers practise adaptive diplomacy in a multipolar international system. It poses a single guiding question: how and why have two states with divergent strategic identities and Cold-War-era hostility constructed a sustained pattern of selective cooperation and what does this partnership reveal about state behaviour in the post-Western order? The study employs a qualitative case-study design built on process tracing of bilateral agreements, official communiques and multilateral statements, complemented by discourse analysis of foreign-policy declarations from both governments. Five empirical domains are reconstructed: defence and counterterrorism, Afghanistan diplomacy, energy and oil trade, Eurasian connectivity and multilateral engagement through the Shanghai Cooperation Organisation (SCO). The findings indicate that the relationship is neither an alliance nor a tactical convergence but a structured pattern of hedging-driven selective partnership shaped by three reinforcing logics, shared interest in regional stabilisation following the United States withdrawal from Afghanistan, complementary needs created by Western sanctions on Russia and Pakistan’s geo-economic pivot and a shared preference for non-Western multilateral platforms. The article contributes to International Relations theory by showing that adaptive diplomacy now operates through layered, non-exclusive partnerships rather than fixed alignments, with implications for the future Eurasian security architecture and for ongoing debates on global order transition.