Britons who travel abroad to wage jihad could be prevented from returning to the UK under new powers outlined by the prime minister.
In a speech to the Australian parliament in Canberra, David Cameron said that jihadists would be subject to special exclusion orders, which would prevent them from returning to British soil after committing terrorism in another country unless they gave themselves up at the border and agreed to abide by strict controls and monitoring.
The proposed exclusion orders would last for two years and could be renewed, with breaches resulting in a possible prison sentence.
The outline of the plans also included additional powers to prevent British citizens from leaving the UK to join radical groups such as the Islamic State or Jabhat al-Nusra. Suspected jihadists could have their passports cancelled and their names added to no-fly lists.
These plans were first proposed in September, as part of the Counter-Terrorism Bill, which Downing Street has said it hopes would become law in early 2015.
However, critics have remarked that the proposals would infringe on the citizenship and human rights of those targeted, and could make them stateless, without the right to work or education.