First came the cheers. Then, soon after, the jeers. Arsenal’s Kai Havertz had been welcomed back to Bayer Leverkusen like a long-lost son from the moment he arrived at the stadium. The German spent 10 ...

In the years after Barack Obama’s presidency, it became an article of faith that one of his central errors in foreign policy was the Syria “red line.” He had said he would attack Syria if it used ...