Walls seem to be a hot topic at the moment. The Americans cannot stop talking about them, but where did these barriers begin?

The world of walls

This program is no longer in production. Making sense of Australia’s place in the world, Between the Lines puts contemporary international issues and events into a broader historical context, seeking out original perspectives and challenging accepted wisdom.

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This program is no longer in production. Making sense of Australia’s place in the world, Between the Lines puts contemporary international issues and events into a broader historical context, seeking out original perspectives and challenging accepted wisdom.

This program is no longer in production.&nbsp;Making sense of Australia’s place in the world, Between the Lines puts contemporary international issues and events into a broader historical context, seeking out original perspectives and challenging accepted wisdom.

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The world of walls

The world of walls