The V sign is a hand gesture in which the first and second
fingers are raised and parted, whilst the remaining fingers are
clenched. Generally considered a "Victory" sign, it can also carry
connotations of "Peace" and "Defiance".
In the UK, if the hand is held out, palm towards the person
performing the gesture (a peace sign reversed), this is considered
to be highly insulting, similar in severity to the one-fingered
salute and meaning "Fuck off". However, in recent years its use has
declined in favour of the one-fingered salute, partly due to
American influence.
In Asia, the gesture is often used by persons posing in
photographs, with no necessary particular meaning.