Why has fighting broken out again in Tigray?

Since March this year there’s been a humanitarian truce in the northern Tigray region of Ethiopia - and so the 22-month conflict has slipped down the international news agenda. But for those who have relatives within the region it’s been a painful time due to lack of access to their loved ones or news about their welfare. Financial services have been blocked – and an internet and phone blackout imposed. During the conflict, tens of thousands of civilians have died, with the World Food Programme saying that almost half of Tigray's 5.5m population is in "severe" need of food. But now the truce has been broken – with reports of air strikes and increased fighting. So why is this happening now – and what does it mean for ongoing efforts at peace talks between the warring parties? Presenter: Alan Kasujja (@kasujja)