Fianna Fáil and Fine Gael leaders warn of 'political crisis' if programme for government rejected

Fianna Fail party leader Micheal Martin with Taoiseach Leo Varadkar. Photograph: Leah Farrell / RollingNews.ie

The leaders of both Fianna Fáil and Fine Gael have warned there is "no plan B" in the event of the programme for government being rejected.