ADDIS ABABA (Reuters) -Ethiopia said on Wednesday that it had allowed humanitarian flights to its northern Tigray region this week, amid concerns that aid is not reaching people facing famine, but the civil aviation head said no such flights had yet left the capital.© Reuters/BAZ RATNER Woman carries an infant as she queues in line for food, at the Tsehaye primary school, in ShireEthiopia’s government has been battling the Tigray People’s Liberation Front since November and thousands of civilians and an unknown number of combatants have since been killed.