China has begun operating a lighthouse on one of its artificial islands in the South China Sea near which a US warship sailed last year to challenge China’s territorial claims. China’s transport ministry held a “completion ceremony”, marking the start of operations at the 55-meter (180-ft) high lighthouse on Subi reef, where construction began in October, according to state news agency Xinhua. Subi reef is where the US guided missile destroyer USS Lassen sailed within […]