India and Pakistan completed their 35th consecutive annual exchange of lists of nuclear installations and facilities on January 1, 2026, in accordance with the bilateral Agreement on the Prohibition of Attack on Nuclear Installations and Facilities, which was signed on December 31, 1988, and came into force on January 27, 1991. Under this agreement, both countries are required to exchange, on the first of January each year, lists of their nuclear installations and facilities that should not be attacked under any circumstances, even during armed conflict. This exchange took place through diplomatic channels simultaneously in New Delhi and Islamabad. The agreement is one of the few surviving confidence-building measures (CBMs) between the two nuclear-armed neighbours and has been maintained continuously since 1992, even during periods of severe bilateral tension such as the Kargil War (1999), the Parliament attack crisis (2001), and the Pulwama-Balakot episode (2019). The 35th exchange is notable as it was conducted against the backdrop of continued strained India-Pakistan relations following the abrogation of Article 370 in 2019 and ongoing cross-border terrorism concerns. In a related development, Pakistan also shared with India a list of 257 Indian prisoners — both civilians and fishermen — currently held in Pakistani jails, through the same diplomatic channel. India and Pakistan have no current formal peace treaty but maintain several low-level communication mechanisms including the Hotline between Directors General of Military Operations (DGMO) and the Indus Waters Treaty mechanism.