The commencement of Exercise Suryakiran XIX on November 25, 2025 brought renewed focus to the deep and multifaceted India–Nepal bilateral relationship. India and Nepal share a unique relationship — a 1,751 km open border, the 1950 Treaty of Peace and Friendship (which allows citizens of both nations to live and work freely in each other's country), and deep cultural, linguistic, and religious ties described as the 'Roti-Beti' relationship. Nepal is landlocked and depends on India for transit access to seaports, power cooperation, including cross-border transmission and bi-directional power trade, and most essential commodities. India is Nepal's largest trade partner and source of foreign investment. Key bilateral frameworks include: the India–Nepal Joint Commission (highest bilateral forum), the Eminent Persons Group (EPG) process to review the 1950 Treaty, hydropower cooperation including Lower Arun and Phukot Karnali, and border guarding and internal-security duties by the Sashastra Seema Bal (SSB). However, the relationship has faced periodic strains — the Kalapani territorial dispute (Lipulekh Pass area), Nepal's 2020 political map controversy, Chinese influence expansion through BRI investments in Nepal, and domestic political instability in Nepal. From India's strategic perspective, Nepal is critical under the 'Neighbourhood First' policy — ensuring a stable, friendly Nepal prevents Chinese encirclement of India's northern flank. Defence cooperation through exercises like Suryakiran, UN peacekeeping coordination, and shared counterterrorism frameworks are key pillars of the security partnership. Rajasthan connection: Several Gorkha (Nepal-origin) regiment soldiers have historical connections to Rajasthan's military history, and Rajasthan's border proximity to the western theatre adds to the state's strategic defence significance.