<Definition> The Strait of Malacca is one of the world's foremost maritime routes for energy and trade, connecting the Indian Ocean (Andaman Sea) and the South China Sea. Flanked by the Malay Peninsula and the Indonesian island of Sumatra, it is bordered by three coastal states — Indonesia, Malaysia, and Singapore — which are jointly involved in managing the Strait. As of the first half of 2025 (1H25), oil (crude and petroleum products) transiting the Strait reached roughly 23.2 million barrels per day, accounting for about 29% of total global seaborne oil trade — the largest volume of any single maritime chokepoint, exceeding the roughly 20.9 million barrels per day that transited the Strait of Hormuz over the same period. Of this, crude oil and condensate accounted for about 16.6 million barrels per day and petroleum products about 6.5 million barrels per day. LNG also transits the Strait, at an estimated 9.2 billion cubic feet per day. In addition, roughly 94,000 vessels pass through the Strait annually, making it one of the world's busiest sea lanes, through which around a quarter of global seaborne trade is said to pass.[1][2][3][4][5]