​In 2018, the International Relations Council launched the inaugural session of the Princeton Diplomatic Invitational (PDI), the successor to the Princeton Interactive Crisis Simulation (PICSim). After a four-year hiatus, PDI was revived in 2024, offering a fresh take on the college conference.

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True to its roots, PDI 2026 will continue to offer an innovative, fast-paced, and dynamic crisis experience. Held on the beautiful Princeton University campus, PDI ‘26 also plans to offer a diverse set of international affairs workshops and learning opportunities, drawing on the wealth of knowledge our University has to offer. We’re so excited to have you!