Sophie, Duchess of Edinburgh has raised eyebrows by appearing to snub a handshake on her landmark royal tour. Prince Edward, the Duke of Edinburgh, and Sophie have been touring Malta to mark 60 years of the Mediterranean island nation’s independence from the UK. The duo met Maltese PM Robert Abela and his wife, Lydia – with the four posing together for photos. But in one awkward encounter caught on video, the duchess appeared to miss Malta’s prime minister reaching out for a handshake. The slow-mo footage, which has circulated on social media, shows Abela reaching across Prince Edward to share…