Tonight in the foreign-affairs series, journalist Andrew Jeffrey journeys back to Angola where, nearly 20 years ago, he was paralysed as a result of an accident on an oil rig. He explores what is being done to help the thousands of Angolans disabled by landmines. Tim Whewell reports from Svelogorsk, in the former Soviet republic of Belarus, where one person in 70 is known to be HIV positive, although the town's first case of Aids was identified just six months ago. Shared needles used by youngsters taking a heroin-like drug known as Bliss are being blamed for the epidemic.