Defence Amendment (Parliamentary Approval of Overseas Service) Bill 2020: the proposal to require parliamentary sign-off for ADF deployments

The short answer

Defence Amendment (Parliamentary Approval of Overseas Service) Bill 2020: the proposal to require parliamentary sign-off for ADF deployments

Greens Senator Jordon Steele-John introduced the Defence Amendment (Parliamentary Approval of Overseas Service) Bill 2020 in the Senate on 7 December 2020. The bill had a lengthy legislative history spanning multiple parliamentary sittings — its second reading was debated on several occasions — but was ultimately defeated when the Senate negatived the second reading motion. In Australian parliamentary procedure, negativing the second reading means the house has voted against the principle of the bill. The bill is effectively dead: it is no longer before the Senate and cannot become law in its current form. It is not law. The bill would have amended the Defence Act 1903 to insert a new section 29A requiring that ADF members not serve beyond Australia's territorial limits in warlike actions except in accordance with a resolution agreed to by both houses of Parliament authorising that service. The requirement would cover deployments that could lead to hostilities, while exempting routine non-warlike service: attachments of Australian personnel to foreign forces, diplomatic or consular postings, service on ships or aircraft not involved in hostilities, educational and training deployments, and activities related to procurement of equipment or stores. The EM noted that 'any service on land overseas other than that specified... could lead to hostilities and would require approval.' This was a revised version of a bill first introduced in 1985 by Australian Democrats Senator Colin Mason (NSW). Senator Steele-John's version added more detailed emergency provisions, public accountability mechanisms, and provisions addressing what happens when Parliament is not sitting, has been prorogued, or is in an election period. Under current Australian law, the decision to deploy the ADF overseas is an exercise of the executive prerogative power — the Prime Minister and Cabinet decide, without any statutory requirement for parliamentary approval. The Governor-General, acting on ministerial advice, exercises the formal command-in-chief power under section 68 of the Constitution, but in practice the decision is made within the executive. Australia is unusual among comparable democracies in having no legislative requirement for parliamentary authorisation of military deployments. The United Kingdom, where no statute requires parliamentary approval, has developed a convention — established after the 2003 Iraq War — that the House of Commons should be given the opportunity to debate and vote on military deployments. The convention was formalised in the Cabinet Manual and was observed for deployments to Libya (2011), Iraq (2014) and Syria (2015). The US Constitution divides war powers between Congress (which declares war) and the President (Commander-in-Chief), and the 1973 War Powers Resolution requires the President to consult Congress and report within 48 hours of introducing armed forces into hostilities, with a 60-day limit on deployments without Congressional authorisation. Germany's Parliamentary Participation Act 2005 requires Bundestag approval for all armed deployments abroad. Spain, Denmark, Finland, Ireland and several other European democracies also require parliamentary approval for overseas military deployments. The bill's emergency provisions were carefully calibrated. In an urgent situation where prior parliamentary approval was impractical, the Governor-General could make a Proclamation authorising the deployment on the written advice of the Prime Minister explaining the emergency and why prior approval was not practical. Both the Proclamation and the advice would have to be published within 24 hours — a transparency mechanism aimed at preventing secret deployments. Within two days, each House would receive a report containing the Proclamation, the Prime Minister's advice, and detailed deployment information: the legal basis, geographical extent, expected duration and the number of ADF members involved. If Parliament was adjourned for more than two days, the relevant Presiding Officer would have to summon the House within two days. If Parliament had been prorogued when a Proclamation was made, or was prorogued within seven days after, the Proclamation would cease to have effect after seven days and no replacement could be made until Parliament met — compelling the government to recall Parliament if it wanted the deployment to continue. During a general election period — when the House of Representatives is dissolved and there can be up to 140 days without a complete Parliament — a Proclamation would cease seven days after the return of the writs. During any ongoing deployment, the Defence Minister would have to report in writing to each House every two months on the status, legality, scope, anticipated duration and efforts to resolve the circumstances requiring the deployment. The EM stated the bill would have no direct financial impact. Its statement of compatibility with human rights argued the bill enhanced 'what many regard as a pre-eminent human right to peace, safety and stability' and gave effect to the UN Declaration on the Right of Peoples to Peace (1984). The defeat of the second reading means the bill is no longer before Parliament. A similar bill could be reintroduced in a future parliament, and the underlying question — whether Australia should join comparable democracies in requiring parliamentary approval for overseas military deployments — has been raised repeatedly by Greens, independent and minor-party members over several decades without being adopted by either major party.

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Evidence review

What the bill proposed

The bill proposed to amend the Defence Act 1903 by inserting a new section 29A. The key provision would have required that members of the Australian Defence Force not serve beyond Australia's territorial limits in warlike actions except in accordance with a resolution agreed to by both houses of Parliament. The requirement would have applied to deployments that could lead to hostilities, capturing the principal category of overseas military operations that the ADF has historically undertaken.

The bill defined specific categories of service that would be exempt from the parliamentary approval requirement: attachments of individual Australian personnel to foreign armed forces; postings to Australian diplomatic or consular missions; service on ships or aircraft not involved in hostilities; educational and training deployments; and activities related to procurement of equipment or stores. The explanatory memorandum stated that "any service on land overseas other than that specified … could lead to hostilities and would require approval." This reflected the bill's focus on combat and potentially combat-related deployments rather than routine defence activities.

The bill was a revised version of a proposal first introduced in 1985 by Australian Democrats Senator Colin Mason (NSW). Senator Steele-John's 2020 version modernised the original through more detailed emergency provisions, public accountability requirements, and mechanisms addressing what happens when Parliament is not sitting, has been prorogued, or is in an election period. The bill reflected a long-standing argument that decisions about committing Australian forces to hostilities should involve the elected Parliament rather than remaining solely within the executive branch.

Evidence review

The emergency mechanism

The bill contained carefully calibrated emergency provisions designed to preserve executive flexibility in genuinely urgent situations. Where prior parliamentary approval was impractical, the Governor-General could make a Proclamation authorising the deployment, acting on the written advice of the Prime Minister. The Prime Minister's advice would need to explain both the nature of the emergency and why prior parliamentary approval was not practical — creating a documented rationale rather than an unexamined executive decision.

A key transparency mechanism required both the Proclamation and the Prime Minister's advice to be published within 24 hours. Within two days, each House of Parliament would receive a comprehensive report containing the Proclamation, the Prime Minister's advice, and detailed deployment information: the legal basis, geographical extent, expected duration, and the number of ADF members involved. This ensured that even emergency deployments would be subject to prompt parliamentary scrutiny.

The bill also addressed constitutional scenarios where Parliament is not sitting. If Parliament was adjourned for more than two days when a Proclamation was made, the relevant Presiding Officer would be required to summon the House within two days. If Parliament had been prorogued, the Proclamation would automatically cease to have effect after seven days and no replacement could be made until Parliament met. These provisions reflected the drafters' attention to preventing the emergency mechanism from becoming a means of bypassing parliamentary oversight during extended non-sitting periods.

Evidence review

Parliamentary oversight safeguards

The bill contained detailed provisions to prevent the emergency mechanism from being used to bypass Parliament indefinitely. If Parliament was adjourned for more than two days, the Presiding Officer would summon it within two days. If Parliament had been prorogued, the Proclamation would lapse after seven days and no replacement could be made until Parliament met. During a general election — a period of up to 140 days without a complete Parliament — a Proclamation would cease seven days after the return of the writs. During any ongoing deployment, the Defence Minister would have to report to each House every two months on the deployment's status, legality, scope, anticipated duration and efforts to resolve the underlying circumstances.

Evidence review

What the bill would not have covered

The bill explicitly exempted non-warlike overseas service: attachments to foreign forces, diplomatic or consular postings, service on ships or aircraft not involved in hostilities, educational or training deployments, and activities related to procurement of equipment or stores. The explanatory memorandum noted that any service on land overseas other than those specified 'could lead to hostilities and would require approval'. The sponsors indicated that for regular, non-hostile deployments not covered by the exemptions, the government could table a list and seek parliamentary approval.

Evidence review

The international context

Australia is unusual among comparable democracies in having no legislative requirement for parliamentary authorisation of overseas military deployments. The United Kingdom has a convention — established after the 2003 Iraq War — that the Commons should debate and vote on military deployments. The United States Constitution divides war powers between Congress and the President, with the 1973 War Powers Resolution imposing consultation and reporting requirements. Germany, Spain and several other European democracies require parliamentary approval for overseas military deployments. Under current Australian law, the decision to deploy the ADF remains solely an exercise of executive prerogative power.

Evidence review

Bill status: second reading negatived

The bill was ultimately defeated when the Senate negatived the second reading motion. In Australian parliamentary practice, negativing the second reading means the house has voted against the principle of the bill — it is a substantive rejection, not merely a procedural termination. The bill is no longer before the Senate and cannot become law in its current form.

The bill had an unusually extended legislative history. First introduced on 7 December 2020, it was debated on multiple occasions across several parliamentary sittings before the Senate finally voted on the second reading. This extended consideration reflects the significance of the question at its heart: whether the power to deploy Australian forces to overseas hostilities should remain solely within the executive or be shared with the Parliament.

While this specific bill was defeated, the underlying question of parliamentary authorisation for military deployments has been a recurring feature of Australian political debate. Similar bills have been introduced by senators from multiple parties over several decades — most recently by Greens senators in 2014 and 2018 before Steele-John's 2020 version. The defeated bill joins a body of parliamentary work that continues to inform public discussion about Australia's war powers framework.

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