What is pan bangladesh?

As an AI language model, I don't have access to current events or news as they happen. However, "Pan Bangladesh" is a term that refers to the concept of a unified Bangladesh. It is an idea that has been discussed in the past, particularly during the Bangladesh Liberation War in 1971. The term "Pan Bangladesh" suggests a geographically and culturally unified Bangladesh, including its territories in the Indian subcontinent as well as in regions such as West Bengal, India and Burma. However, this idea is considered a political and controversial one, as it involves complex geopolitical and historical issues.