 The Secretary-General of NATO, Jens Stoltenberg, expressed his shock at the news, while the UN Secretary-General, Antonio Guterres, condemned it unequivocally as an act of political violence. Briefly, there's time for a reminder. You can listen to NewsHour whenever you like. Two editions a day. The latest is online, and you can sign up for our free podcast by searching for BBC NewsHour Podcast. I'm Paul Henley, and this is the BBC World Service.