Brazil strengthens border security amid fears criminal gangs from Venezuela could cross into the country.
Breakdown
- Brazil-Venezuela border has only one official, monitored crossing
- Thousands of unguarded paths make illegal crossings easy 24s
- Brazilian forces on alert after political upheaval in Venezuela 55s
- Indigenous communities increase patrols amid security fears 1m 29s
- Tensions remain high despite calm appearance at the border 2m 14s
