Answer : 1. "Gulf of Aden"
Explanation :

The Indian Navy has deployed indigenous guided missile destroyers in the Gulf of Aden region in view of the recent piracy incident. The move is aimed at preventing piracy attempts in the Gulf of Aden region. The Gulf of Aden is located in the Arabian Sea, between Yemen and Somalia (Horn of Africa). It forms a natural maritime link between the Red Sea and the Arabian Sea.