The family of Novak Djokovic and the president of his home country say Australia’s crackdown on the tennis star is part of a political agenda. “This has nothing to do with sports, this is a political agenda. Novak is the best player and the best athlete in the world, but several hundred million people from the West can’t stomach that,” Djokovic’s father, Srdjan, told reporters in Belgrade on Thursday. Aleksandar Vucichursday, Serbia’s president, offered a similar take while speaking in the country’s capital. “What’s not fair is this political persecution, that everyone is taking part in, even the Australian prime minister,” he said, adding that he was “afraid that this kind of political ranting against Novak Djokovic will continue.” “They want to prove something else. When you can’t beat someone then you do these kind of things,” he said. Djokovic, who has declined to say whether he’s received a COVID-19 vaccine, …