Andrew Roberts has written or edited twelve books, and appears regularly on radio and television around the world. His biography of the Earl of Halifax, entitled The Holy Fox was published in 1991, followed by Eminent Churchillians in 1994. Other books include Salisbury: Victorian Titan, Napoleon and Wellington and Hitler and Churchill: Secrets of Leadership. A History of the English-Speaking Peoples Since 1900 brought him an invitation to the White House in February 2007, where he delivered the prestigious White House Lecture. The Storm of War was published in August 2009 and reached No.2 on The Sunday Times bestseller list, and won the British Army Military Book Award for 2010. In April 2012 he was awarded the William Penn Prize.