This is because the narrow channel is easy to cut off from other areas thereby having the ability to "choke" off transit in times of conflict.
Tani waxay salka ku haysaa in kanaalka cidhiidhiga ahi yahay wax uun laakiin ay adag tahay in laga gooyo dhulal kala duwan taas oo markaa awoodi karta inay "gaagto" safarka dhexdiisa muranka.