Ongoing geopolitical tensions stemming from Russia's 2014 annexation of Crimea and subsequent full-scale invasion of Ukraine have kept Moscow excluded from the G7, with member states maintaining unified sanctions and diplomatic isolation. Recent G7 summits and foreign minister statements have reiterated that any return hinges on verifiable withdrawal from Ukrainian territory and broader de-escalation, conditions unmet as of September 2026. Traders assign a 97.7% probability against rejoining before 2027 because institutional processes, alliance coordination, and domestic political constraints in Western capitals make rapid reversal improbable within the narrow remaining timeline. A comprehensive Ukraine peace deal or abrupt policy shift by key members could theoretically reopen discussions, though historical precedent shows G7 expansions or reinstatements unfold over multiple years.