Chinese President Xi Jinping’s visit to Serbia on the 25th anniversary of the Nato bombing of the Chinese embassy in Belgrade was “timed to increase tensions” with the West, a senior US official has said.Xi touched down in the Serbian capital on Tuesday as part of a three-stop tour of Europe, his first visit to the continent since 2019.His arrival in Belgrade on May 7, the date a US air strike hit China’s embassy in the country in 1999, was seen as a pointed move that would ensure the trip had a geopolitical edge.“Twenty-five years ago today, Nato flagrantly bombed...