Former Defence Secretary Dennis Richardson says China is “playing a long game” in its pursuit of a security presence in the South Pacific.“To complicate both US and Australian strategic defence planning, they will continue to strive for that over the next 10, 20 years,” he told Sky News Australia.“We have to succeed every time they come after that and they only have to succeed once.“So it’s clearly going to be a priority for the Australian government for the foreseeable future, regardless of who’s in office.”