Speech by Hon Tony Abbott, 2 September, 2019 at Policy Exchange:

“The argument over leaving the European Union is Britain’s least civil and most seismic disagreement, at least since the Irish question, a century or so back, that shaved off part of the country and irrevocably split the Liberal Party. Yes, it is that serious.

Allow me, please, to make a declaration at the outset: that I want what’s best for Britain – not because of birth; my citizenship was renounced some 30 years ago – but because it’s in the best interests of the wider world that Britain be strong; and Britain can’t be its full-strength without also being free – free to set its own course and to chart its own future.

Let’s start with a little thought experiment: I suppose it’s not entirely beyond anyone’s comprehension that Australia might form a union with New Zealand, given that our constitution’s founders envisaged that our trans-Tasman siblings might once have joined our commonwealth; or even that we might somehow have a union of sorts with Papua New Guinea, that was once our colony.” Please read more here.