Answer : 1. "Bangladesh"
Explanation :

Recently India and Bangladesh began the 11th edition of their annual joint military exercise, Sampriti, in Umroi, Meghalaya. This exercise, held on a rotational basis between the two countries, highlights the strong bilateral defense cooperation between them. SAMPRITI, launched in 2009, aims to promote interoperability, share tactical expertise and promote best practices between the Indian and Bangladeshi armies.