Admiral William McRaven, Former Commander of US Special Forces

Zeinab Badawi talks to Admiral William McRaven, former commander of US special forces who prepared the mission that killed Osama Bin Laden five years ago. Western governments send special forces into conflict zones yet still insist they're not committing 'boots on the ground". President Obama has just committed to sending many more US special forces into Syria. What is their role, and do they operate under different rules from conventional forces?