Australia’s prime minister Malcolm Turnbull’s government has zeroed in on Susan Lamb in recent weeks over her efforts to renounce UK citizenship. Photograph: William West/AFP/Getty Images

The Australian government intends to persist with pressuring the Labor member for Longman, Susan Lamb, about her eligibility to sit in parliament desp(...)

Australian deputy prime minister Barnaby Joyce: revealed to hold New Zealand citizenship and may be ineligible to sit in parliament under the Australian constitution, which disqualifies dual nationals. Photograph:  Lukas Coch/EPA

Australia and New Zealand have become embroiled in an extraordinary diplomatic spat over claims the New Zealand opposition colluded with the Australia(...)