The United States has issued a warning that Peru risks eroding its sovereignty after a court ruling limited state oversight of a Chinese-controlled megaport, prompting a sharp rebuke from Beijing and intensifying geopolitical tensions over a strategic hub on South America’s Pacific coast. The dispute centres on the Port of Chancay, a US$1.3 billion deep water facility located about 80 kilometres (50 miles) north of Lima and majority owned by China’s state-run shipping giant Cosco Shipping...