Prince Harry to play beach volleyball in Rio on trade mission to Brazil It will be the first time he has worked as a trade ambassador, as the work previously undertaken by the Duke of York is shared out among other members of the Royal family. Royal aides are alert to the possibility that the visit to Brazil could be hijacked by protestors from neighbouring Argentina following increased tension over the sovereignty of the Falkland Islands. One St James's Palace source said: "We need to keep a wary eye on developments between then and now, but we're not expecting there to be any issue." His brother, the Duke of Cambridge, has already been the target of personal attacks by Argentina's foreign ministry, which has described him as a "conquistador" as he flies to the Falkland Islands to begin a six-week tour of duty as an RAF Search & Rescue pilot. Argentina is determined to portray the Duke as "William the Conqueror" despite the peaceful role of his unit. Prince Harry will also need his diplomatic skills when he visits Jamaica and meets the country's Prime Minister, who announced last month that she intended to remove the Queen as head of state and become a republic. He will visit the running track where Olympic 100m champion Usain Bolt trains, and hopes to take part in a "race" against the world record holder. Other highlights will include a visit to the 3,000-year-old Mayan pyramid of Xunatunich in Belize and a two-day stay in Nassau in the Bahamas.