Is there a military coup in Zimbabwe?

Zimbabwe’s ruling party has accused the army commander of “treasonable conduct” after he threatened to step in to calm political tensions. It follows rumours that a military coup could be under way after a convoy of armoured vehicles was spotted heading towards the capital Harare. The country was plunged into a political crisis after President Mugabe sacked his vice president last week, a move which could pave the way for his wife Grace to succeed him.