Part 1
General Provisions
9. Obligation to consult, and rejection of requests from the International Criminal Court
1. Matters arising shall be resolved through consultations with the International Criminal Court, in particular where the execution of a request from the International Criminal Court would:
(2) prejudice national security (articles 72 and 93(4) of the Statute)
Protection of national security
Refusal of ICC request - protection of national security
EDIT.