It was my understanding that ATC give taxi clearance and Instructions, and the PIC is responsible for following the instructions without colliding with anything! It matters not where the THY A321 was, the Asiana crew were negligent. If the crew is staring at taxi charts with heads in the cockpit they cannot be observing the outside conditions, if in doubt "Stop" . Whatever you may think of the THY aircraft position, the responsibility for the collision remains firmly with the Asiana Crew.. It is quite normal for aircraft on taxiway G to stop short of the terminal parking waiting for the docking systems etc, doesn't give the right to following aircraft to slice them up! There is a very good reason these Far East carriers have " follow me" cars...