Debt swaps exchange debt for some other asset or obligation. In the context of development, they normally involve countries negotiating cancellation of external debts in return for commitments on internal resource mobilization or some other government action. There has been considerable international interest in debt swaps and their potential to create a new and additional financing mechanism to help overcome long-standing barriers to development. The impact of AIDS on many developing countries, including many of the most indebted, has been severe. In the worst cases, AIDS has caused development progress to be set back by decades. There is therefore emerg­ing interest in examining whether debt swaps are potentially useful new instruments to apply to the problem of AIDS and development. This is according to a UNAIDS policy brief on the issue.