Former U.S. Ambassador to Ukraine Marie Yovanovitch, a key figure in the impeachment of President Trump, landed a book deal about her time as a career diplomat. Houghton Mifflin Harcourt told the Associated Press that it would publish Yovanovitch’s memoir, which is expected to be released in spring 2021. Two people familiar with the deal said it was worth seven figures. The book will reflect on her career from Mogadishu, Somalia, to Kyiv and “finally back to Washington, D.C. — where, to her dismay, she found a political system beset by many of the same challenges she had spent her...