For years, some Indian planes were able to use Bangladesh airspace without paying fees to Bangladesh until Dr. Yunus' interim government rightfully banned any further flight from certain Indian flights until fees are paid.  Historically, Bangladesh relied on aging first-generation radars from 1980 at Hazrat Shahjalal International Airport. Because of these gaps, India's radar systems frequently intercepted and registered data for commercial traffic over South Asia. After Bangladesh installed highly advanced systems to their radar network, Dhaka is reclaimed full, independent control of its own sovereign skies and reducing its reliance on Indian oversight, this however made India upset. Unfortunately, India wants full supremacy to monitor it's neighbors but does not want to be monitored reciprocally.