Explainer: Who are JeM and what is diplomatic wrangle about Masood Azhar?

A UN Security Council committee blacklisted the head of the Pakistan-based militant group Jaish-e-Mohammed (JeM), Masood Azhar, on Wednesday after China dropped its objection to the move, ending a long diplomatic impasse.

Jaish-e-Mohammed had taken responsibility for the deadliest attack on security forces in Indian Kashmir in 30 years of insurgency, ratcheting up tension between the nuclear-armed South Asian neighbours.

India has said the group and Azhar enjoy free rein in Pakistan, and demanded that Pakistan act to stop militant groups operating from its soil.

Pakistan had condemned bomb attack in February that killed 40 paramilitary policemen but denied any complicity.

India blamed Jaish