Travellers should also be aware of the potential for violence-related injuries. If confronted, give up your valuables.
Most countries have 'no go' areas which are unsafe to visit.
Other countries should be avoided entirely, or visited only on essential business. The BBC is not liable for the contents of any external internet sites listed, nor does it endorse any commercial product or service mentioned or advised on any of the sites. Always consult your own GP if you're in any way concerned about your health.