Former Margaret Thatcher's aide says Theresa May's replacement may be a harder Brexiteer

United Kingdom's Prime Minister Theresa May gave a tearful speech after announcing she will be stepping down as leader of the Conservative party on June 7th. Former Margaret Thatcher's aide and Director at the Heritage Foundation Nile Gardiner says her replacement may be a harder Brexiteer and foster closer relations with the U.S. He joins Yahoo Finance's Seana Smith.