At-a-glance:The international arms trade

What do weapons cost?

Who buys and who sells?

UK exports how much and who to?

Which companies make the weapons?

Governments spend more than $700bn (442bn) on their armed forces every year and official annual arms sales total $30bn (18.9bn).

BBC News Online looks at the international arms trade as a campaign against it is launched by the charities Oxfam and Amnesty International.

Click on the headings on the left to find out more.