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US, UK 'in missile defence talks' US, UK 'in missile defence talks'
(10 minutes later)
The UK and US governments have been holding discussions on the possibility of positioning a US anti-ballistic missile defence system on UK soil.The UK and US governments have been holding discussions on the possibility of positioning a US anti-ballistic missile defence system on UK soil.
An article in The Economist claims UK Prime Minister Tony Blair has lobbied the US president for the system.An article in The Economist claims UK Prime Minister Tony Blair has lobbied the US president for the system.
But government sources have told the BBC that talks are "to keep Britain's options open", not a lobbying effort.But government sources have told the BBC that talks are "to keep Britain's options open", not a lobbying effort.
Russia said the system, which tracks and destroys missiles launched against the US, will trigger an arms race.
Such a system uses radar and satellites to detect enemy missile launches and to guide interceptors to their targets.Such a system uses radar and satellites to detect enemy missile launches and to guide interceptors to their targets.
Poland has recently confirmed that the US wants to negotiate the use of its territory to build part of its missile defence base.Poland has recently confirmed that the US wants to negotiate the use of its territory to build part of its missile defence base.
How missile defence worksHow missile defence works
The US has also asked permission from the Czech Republic and received the backing of Czech PM Mirek Topolanek.The US has also asked permission from the Czech Republic and received the backing of Czech PM Mirek Topolanek.
In 2002, the US withdrew from the 1972 Anti-Ballistic Missile Treaty it signed with the Soviet Union.In 2002, the US withdrew from the 1972 Anti-Ballistic Missile Treaty it signed with the Soviet Union.
It says a missile defence system could significantly reduce threats from so-called "rogue states" such as Iran and North Korea.It says a missile defence system could significantly reduce threats from so-called "rogue states" such as Iran and North Korea.
The shadow defence secretary Dr Liam Fox, speaking on the BBC Today programme, called for the government to be 'honest' and lay out the risks and benefits that such a missile system would pose to the UK.