Taoiseach Enda Kenny and his British counterpart have agreed to "remain in close contact" over the political situation in Northern Ireland.
Mr Kenny confirmed he spoke with Prime Minister David Cameron on the phone yesterday and reviewed the situation "including issues of trust and confidence arising from recent murders in Belfast, as well as the ongoing political impasse in regard to the implementation of the Stormont House Agreement".
"We renewed the commitment of both Governments to work together and with the parties in Northern Ireland, to protect the power-sharing institutions in Northern Ireland and to ensure that the Stormont House Agreement is fully implemented," he said.
He said they agreed to remain in close contact in the coming days, when Secretary of State Theresa Villiers and Foreign Affairs Minister Charlie Flanagan will meet with the parties in the Northern Ireland Assembly.
The political institutions in the North are under threat since the PSNI chief constable said the IRA still existed and some of its members were involved in shooting a man dead in Belfast.
Northern Ireland's First Minister Peter Robinson joined calls for independent monitoring of the IRA and urged the British Government to suspend the Assembly and convene urgent political talks.
However Sinn Féin accused the DUP of trying to subvert the justice system after it asked the PM to revoke the early release licences of two republican ex-prisoners.