Articles on National security

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AAP Image/Darren England

Without women, Australia’s defence force will struggle to recruit enough people

We need women in the military, including in combat roles. Without them, recruitment targets will fail. It’s not diversity, equality and inclusion: it’s reality.
Director of Intelligence Tulsi Gabbard testifies during a House Permanent Select Committee on Intelligence hearing on March 26, 2025, in Washington. Nathan Posner/Anadolu via Getty Images

How is classified information typically shared and can officials declassify secrets whenever they want? A national security expert explains

Government officials with classified information clearance typically have a range of secure ways they can view or discuss classified information.
A customer shops in the produce section at a grocery store in Toronto in February 2024. THE CANADIAN PRESS/Cole Burston

Why Canada must treat its food system as a matter of national defence

Faced with both a trade war and annexation threats, Canada must confront whether its domestic food systems can feed its population in a crisis.
Military engineers managing supply routes in Greenland in the 1950s paid attention to the weather and climate. US Army/Pictorial Parade/Archive Photos/Getty Images

The US military has cared about climate change since the dawn of the Cold War – for good reason

During the Cold War, the US poured support into Arctic military outposts and climate research amid fears of a Russian invasion. Climate change is still on the military’s radar as a threat multiplier.
The U.S. says Chinese hackers have penetrated America’s phone networks – and are still inside them. Anton Petrus/Moment via Getty Images

What is Salt Typhoon? A security expert explains the Chinese hackers and their attack on US telecommunications networks

Chinese hackers are alleged to have broken into US phone networks, giving Chinese intelligence services a window onto specific Americans’ phone and messaging activity.

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