Ethiopian Prime Minister Abiy Ahmed’s vow this week to head for the front lines of his country’s brutal year-long war has boosted recruitment for the beleaguered armed forces. At least one prominent distance runner — marathoner and Olympic silver medallist Feyisa Lelisa — has joined thousands of ordinary Ethiopians keen to follow Abiy’s lead. World powers have voiced alarm about a military escalation that could scuttle efforts to broker a ceasefire, as rebels claim they are advancing towards the capital Addis Ababa and foreign governments tell their citizens to leave. On Wednesday hundreds of …