Irish leader feared outing by newspapers before coming out.

Ireland's Prime Minister Leo Varadkar (Jack Taylor/Getty)

A new book charts the rise of Ireland’s mould-breaking gay leader, Leo Varadkar.

Varadkar is one of the few openly gay world leaders, becoming the country’s Taoiseach (prime minister) through a Fine Gael leadership contest in 2017.

The leader had come out as gay in…