• President Recep Tayyip Erdogan of Turkey claimed a narrow victory in a national referendum (with just over 51 percent voting in favor) that vastly expands the powers of his office, a watershed moment that is likely to cement his one-man rule.

The main opposition party called for a partial recount of around 2.5 million votes. Among the items on Mr. Erdogan’s agenda is the possible reintroduction of the death penalty.