About PANEX-21:

• The Indian Army is organizing an exercise named PANEX-21 for the member nations of Bay of Bengal Multi-Sectoral Technical and Economic Cooperation (BIMSTEC) countries (Bangladesh, Bhutan, Nepal, Sri Lanka, Myanmar, Thailand and India).
• It is a multi-nation Humanitarian Assistance and Disaster Relief (HADR) exercise. Its aim is to foster joint planning and build regional cooperation for responding to natural disasters.

Source: EPIC December 2021