A senior Liberal Democrat source said:
There has been no change in policy on Trident. This is just some detail around the announcement of funding that was made back in May 2011.
The crucial decision on maingate and whether there will be a like-for-like replacement for Trident will not be made until 2016.
The Liberal Democrats will continue to make the case for alternatives to a like-for-like replacement. Our current review into those alternatives will report next year.
More top news
Murder charges against an Irish nanny, who spent more than two years in prison accused of killing a baby in the USA, have been dropped.
Charities face probe after claims they may have been involved in buying and selling widower's details.
The island of Kivalina in Alaska is quickly disappearing into the ocean, watched by its 400 residents, due to climate change.