Answer : 4. "Kathmandu"
Explanation :

Kathmandu recently hosted the multinational military exercise ‘Peace Prayas IV’, which became the epicenter of global peace efforts. The event included military representatives from 19 countries involved in UN peacekeeping missions, who emphasized their collaborative dedication to global peace and security. The exercise, co-hosted by the Nepalese Army and the US Indo-Pacific Command, highlighted the strong military cooperation between Nepal and the United States.