This examines what would happen if an independent Scotland insisted on the immediate removal of the Trident nuclear missile submarines from their base on the Clyde.

BBC: Week ahead

The Trident missile system, Britain's nuclear deterrent, is carried by submarines based at the Faslane naval base on the Clyde, near Helensburgh.

BBC: Protesters march against Trident in Glasgow

The SNP government in Edinburgh wants a fleet of nuclear-armed submarines to be removed from its base on the west coast of Scotland.

BBC: Urgent question: Trident