The Taoiseach believes Ireland should be afraid of a no-deal Brexit.
It's after DUP leader Arlene Foster accused him of "project fear mark two" over raising the prospect of a united Ireland if no deal is reached on the UK leaving the EU.
Asked about Ms. Foster's comments, Leo Varadkar says no-deal is something we should fear:
"In terms of fear, I think we should be afraid of a no-deal."
"A no-deal Brexit would have very serious impacts on the economy, north and south and in Britain."
" It could have security implantations as well and constitutional implications so it's something we have to prepare for".
Since becoming Bitish Prime Minister a week ago, Boris Johnson has signalled his intent to have the UK leave on October 31st.
Johnson says this will happen whatever the circumstances.
Britain's Chancellor is providing an extra £2 billion to prepare for a no-deal scenario.
The money is to be used for stockpiling medicines and hiring more border officials.