Bhumibol Adulyadej

Thailand begins a year of mourning after the death of its beloved king

Thailand awoke Friday to grief and uncertainty as it began a one-year official mourning period after the death of the country’s beloved monarch of 70 years.

The highly revered king, Bhumibol Adulyadej, died Thursday at age 88 after years of illness and was considered a rare unifying figure in the country’s recent tumultuous history.

A national holiday was declared as leading newspapers and news websites published in monochrome, movies and concerts were rescheduled and all television channels were airing the same tributes to the late king, the world’s longest-ruling current monarch.

State officials and other civil servants were told to maintain an official...