Answer : 4. "Bhutan"
Explanation :

Prime Minister Shri Narendra Modi has been conferred with Amir Amanullah Khan Award, Afghanistan’s highest civilian honor. He has bestowed the honor of President Ashraf Ghani after the inauguration of the landmark Afghan-India Friendship Dam in Herat. As the first Indian, and amongst only a handful of foreign leaders to receive the award, it signifies the strength of a unique relationship and is a testament to the personal commitment of the PM in advancing India-Afghan ties.