Tanzania has announced cancellation of visa-on-arrival for citizens of DRC and Angola as part of the visa policy change which officials say is “in the best interest of the nation and for security.” The move comes amid calls for countries on the continent to open up their borders. Emery Nzirabatinya, Expert on International Relations joins CNBC Africa for an analysis on how such decisions are made and their impact on diplomatic ties and socio-economic development.

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