Lake Titicaca was considered a sacred site by the Incas. In the 15th century, they made it the cradle of their civilization, the sun’s place of birth. And yet, beneath the lake’s waters lies a different story. …

TOKYO—Britain said on Tuesday it would permanently deploy two warships in Asian waters after its Queen Elizabeth aircraft carrier and escort ships sail to Japan in September through seas where China is vying for influence with the United States and Japan. Plans for the high-profile visit by the carrier strike group come as London deepens…

COLOMBO—A cargo ship carrying tonnes of chemicals sank off Sri Lanka’s west coast, its navy said on Wednesday, and tonnes of plastic pellets have fouled the country’s rich fishing waters in one of its worst-ever marine disasters. The government on Wednesday suspended fishing along an 80-km (50-mile) stretch of the island’s coastline, affecting 5,600 fishing…

BANGKOK—China has notified downstream neighbors it is holding back the Mekong River flow at a hydropower dam on the waterway’s upper reaches for 20 days, as part of a new data-sharing pact, the Mekong River Commission (MRC) and Thailand said on Wednesday. The statements came a day after a new U.S.-backed monitoring system said China…