Northern Ireland First Minister and Sinn Féin deputy leader Michelle O'Neill has said Fine Gael must not "bury their head in the sand" on the debate about a united Ireland.
Taoiseach Simon Harris said at the weekend that unification was not a priority.
Speaking in Belfast this afternoon, Ms O’Neill said she planned to speak to Mr Harris within the next 24 hours.
There was no escaping the fact that the debate around constitutional changes "is a very live one", she said.
"Let's have the maturity in which to, you know, deliver good public services, do what we have to do in government, but also have the maturity to alongside that have a very pragmatic conversation about constitution change what that might look like," she added.
"Fine Gael shouldn't put their head in the sand on that, they need to be engaged in the conversation.
"And I would encourage the Taoiseach, now that he’s in post, to bring about the work in terms of planning for constitutional change.
"Let’s have the Citizens’ Assembly. Let's have the debate around education, health, what does the future look like for our economy across the island?"
Ms O’Neill said she planned to invite Mr Harris north of the border soon to discuss opportunities for cooperation across the island.
