Varadkar raises prospect of Stormont 'Plan B' during busy day of meetings in Belfast
Ulster Unionist Party leader Doug Beattie described his meeting with Varadkar as a “neighbourly catch up”.
Northern Ireland has been without a functioning government for more than a year amid unionist concerns around post-Brexit trading arrangements.
Alliance Party leader Naomi Long said she is concerned that the window to restore the powersharing institutions before a UK general election is closing.
Sinn Féin vice president Michelle O'Neill has said public patience with the DUP is "wearing thin" in relation to the restoration of Stormont.
DUP leader Jeffrey Donaldson said his focus at the moment is on resolving the "major problems" that were created by the Northern Ireland Protocol.