The FBI Building in Washington, DC.
An informant gathered information from Trump campaign staffers for the FBI's Russia probe. An historian writes that informants are one of the most basic ways the FBI and police investigate.
Random ID checks announced last week by the Turnbull government will erode trust between police and the public.
We need to ensure we do not sacrifice our liberty in the pursuit of a goal that is at best ineffective and at worst counterproductive.
Australian forces will need to be prepared for natural disaster relief missions.
Damian Pawlenko/Dept of Defence
Australia faces many security issues driven by climate change, including more international migration and an increase in defence personnel being sent on disaster relief missions, a Senate inquiry has found.
The challenge for legislators, courts and the wider community is to ensure any interference with privacy is minimal, rather than merely lawful.
It is vital for governments and citizens to discuss how much privacy should be sacrificed when issues of national security arise.
President Donald Trump with now-former Secretary of State Rex Tillerson, right, and former National Security Adviser H.R. McMaster.
AP /Andrew Harnik
John Bolton just started his job as National Security Adviser to President Trump. He's the latest in a ever-changing cast of staffers, raising the question: Who's in charge of national security?
AP Photo/Alex Brandon
A former State Department official says Bolton is a military hawk who wants the US to reclaim its global dominance -- mostly by force.
Nuclear reactors line the bank of the Columbia River at the Hanford site in 1960.
During the Cold War, the US built nuclear weapons at a network of secretive sites across the nation. Some are still heavily polluted and threaten public health today.
Is Donald Trump really the one setting the direction of US security policy?
Mounting evidence suggests we are so mesmerised by the theatre around Donald Trump that we have lost sight of how the US security establishment wields power.
Cabinet confidentiality is important to ensure ministers are able to debate ideas before a decision is made public.
We need to balance a legitimate desire for transparency in politics with the need for free and thoughtful debate.
Would the ABC’s publication of confidential cabinet documents would be in breach of a proposed government bill?
It's increasingly difficult for investigative journalists to hold governments to account – partly due to anti-terror and security laws making it harder for whistleblowers to act.
At the funeral of Nabra Hassanen, a Muslim girl who was beaten to death.
AP Photo/Steve Helber
Before Trump said he wanted to create a Muslim registry, there were a number of Islamophobic policies in place.
Trump with National Security Adviser H.R. McMaster, left, and Defense Secretary Jim Mattis, center.
AP Photo/Pablo Martinez Monsivais
The National Security Strategy does a good job at listing problems and suggesting fixes. But there’s more to strategy than that.
Paul Keating is known as one of the most Indonesia-friendly Australian prime ministers.
It was Paul Keating himself who first raised the idea of a security agreement between Indonesia and Australia in June 1994 to Indonesian President Soeharto.
Liberal and Labor camps expect incumbent John Alexander will hold on against the ALP’s Kristina Keneally.
The stakes in Saturday's Bennelong byelection could hardly be higher.
Michelle Grattan speaks with Deep Saini about the week in Australian poltiics.
Politics Podcast: John Blaxland on new foreign interference laws.
John Blaxland has some real concerns about the unintended consequences of the proposed foreign interference legislation on academic debate.
Increasingly, the language of ‘national security’ is invoked to protect a government’s broader interests.
New laws aiming to crack down on foreign interference in Australian politics suggest the concept of 'national security' is continually expanding.
Sam Dastyari was forced to resign as Labor’s deputy Senate whip last week.
The public release of secret intelligence can have a powerful impact on the political environment, as the revelations regarding Sam Dastyari demonstrate.
Labor’s Sam Dastyari has been sacked from his position as deputy Senate whip for his poor judgement.
The Sam Dastyari episode underscores the need for clear-cut rules to prevent those with links to foreign governments from using money to influence the political process.
Sam Dastyari has been forced to resign as Labor’s deputy Senate whip.
Bill Shorten has forced Labor senator Sam Dastyari to quit as opposition deputy whip in the Senate.