Sinn Fein leader: Brexit makes Irish unity 'a more imminent reality'

Sinn Fein leader Mary Lou McDonald says Brexit makes Irish unity a "more imminent reality" than ever before.Ms McDonald accused Boris Johnson in particular of being "deliberately provocative" and "grossly irresponsible" about the peace process.Ms McDonald, who succeeded Gerry Adams as Sinn Fein president six months ago, believes Brexit, among other issues, will lead to a referendum on Irish unity.