Welcome to the Princeton Diplomatic Invitational

In 2018, the International Relations Council launched the inaugural session of the Princeton Diplomatic Invitational (PDI), the successor to Princeton Interactive Crisis Simulation (PICSim). We are excited to announce the third iteration of PDI will take place in 2020 from February 28 to March 1.

True to its roots, PDI will continue to offer an innovative, fast-paced, and dynamic crisis experience. This year, PDI will feature two joint-crisis committee (JCC) universes, an ad-hoc, and a marathon—a 24-hour, one-session committee that will challenge delegates to resolve an intractable issue before the clock runs out. PDI 2020 will also offer a Security Council Committee, run with crisis elements.

Background Guides

To be released early 2020.


Interested in attending PDI? Click here.

Fees & Logistics

Planning for PDI.


Committees will be announced in fall 2019.

Executive Team

Meet the members of this year's Executive Team.


Register here.



Committee sessions, socials, and more!