This chapter examines the ethical dilemmas and strategic risks emerging from the integration of artificial intelligence (AI) into diplomacy. As foreign ministries adopt AI for decision-making, negotiation, and strategic communication, new vulnerabilities arise concerning algorithmic bias, institutional accountability, and cognitive manipulation. AI can reinforce structural injustices, obscure responsibility, and undermine human judgment if deployed without ethical safeguards. The concept of cognitive diplomacy offers transformative potential, yet its implementation demands robust normative frameworks to preserve transparency, sovereignty, and trust. This chapter analyzes three key domains of ethical concern: algorithmic integrity, institutional responsibility, and strategic trust. It argues that AI must remain subordinate to human ethical reasoning, with explainable and accountable systems guiding diplomatic decisions. Risks such as digital dependency, covert manipulation, or deepfake-driven escalations highlight the need for international norms and preemptive governance. By embedding ethical design, cross-sectoral oversight, and culturally sensitive protocols, states can ensure that cognitive diplomacy strengthens, rather than erodes, the human foundations of international order. Ultimately, this section calls for a diplomacy that is technologically advanced yet normatively grounded—where AI amplifies ethical judgment and intercultural empathy rather than replacing them. In doing so, it lays the groundwork for a principled and resilient architecture of digital-era statecraft.