Germany’s chancellor, Angela Merkel, arrives in Ethiopia today on the last leg of a three-day, three-nation jaunt that also took her to Mali and Niger. Her main aim is to reduce African migration to Europe at its source, by providing jobs in countries such as Ethiopia, a big recipient of German aid. (In Mali, 235 German soldiers are also training the local army and another 650 are due to join a UN peacekeeping mission in the north.) But Mrs Merkel can expect tricky questions over her plans to encourage trade and investment with Ethiopia, given that it has just declared a state of emergency. The declaration grants an already authoritarian regime more powers to ban anti-government protests, which have been spreading across the country for months. Human-rights groups say more than 100 people have been killed by the government and thousands more arrested. Some will, no doubt, be forced to flee abroad.