More than 20 years after she left the top office in British government, the late former Prime Minister Margaret Thatcher continues to exercise an important influence over the conduct of British — and Western — policy.

Thatcher biographer John Blundell, former director general at the Institute of Economic Affairs and current visiting fellow at the Heritage Foundation, discussed Thatcher’s role in recent history during a presentation today to the John Locke Foundation’s Shaftesbury Society. In the video clip below, Blundell outlines two of Thatcher’s key assets.

2 p.m. update: Click play below to watch the full 52:28 event.

You’ll find other John Locke Foundation video presentations here.