Sashastra Seema Bal is the lead intelligence unit for the ____________ and Bhutan borders and the coordinating agency for national security activities.

Sashastra Seema Bal (SSB) is one of India's Central Armed Police Forces (CAPFs). It is mandated as the Border Guarding Force for the open and friendly international borders of India with Nepal and Bhutan. It also acts as the lead intelligence agency for these borders.