Tension over the migrant crisis on the Poland Belarus border escalates

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Thousands of migrants have been trying to cross the border between Belarus and Poland. We have an update on the humanitarian situation and growing political crisis there. We speak to one of the world's leading atmospheric scientists for her view on the climate deal struck at the COP26 summit. And what is being done to end the civil conflict in Ethiopia? We have the latest on the international diplomatic efforts, ranging from the call for a ceasefire to possible sanctions.