The second Trump administration has accelerated the resurgence of America First policies, the retreat of multilateralism, and the transactionalization of alliances, shaking the foundations of the postwar international order and rapidly eroding established structures of inter-state solidarity and cooperation. Amid this structural upheaval, many countries are pursuing diversification to secure greater strategic autonomy, with calls for stronger partnerships among like-minded middle powers growing louder. This session departs from that urgency – rigorously assessing whether meaningful solidarity and cooperation among middle powers, particularly U.S. allies and key partners, is genuinely achievable, and if not, what structural obstacles stand in the way. Beyond optimism alone, it seeks to identify concrete policy pathways for translating such cooperation into real strategic synergy, while exploring what role South Korea must play – not as a passive participant, but as an active architect and practitioner of pragmatic diplomacy in a reconfiguring world order.