Who is Kulbhushan Jadhav - Indian 'spy' sentenced to die by Pakistan

Kulbhushan Jadhav, a retired Indian navy officer has been awarded the death sentence by a military court in Pakistan. Jadhav has been accused by Pakistan of being a 'RAW' agent, and has supposedly confessed before the court of being tasked by RAW to plan, coordinate and organise espionage and sabotage activities aiming to destabilize and wage a war against Pakistan. The claims, however, have been challenged by India. Given below is what we know about Kulbhushan Jadhav and the stance taken by Pakistan and India.