I don't necessarily think that it will threaten peace in Northern Ireland because there are a lot of allies that they can pull help from, but it is a legitimate security concern. I think that the threat needs to be taken seriously and that they should prepare to defend themselves.
Given the fact that the Continuity Irish Republican Army is labeled as a terrorist group by the United Kingdom and the United States, I would have to assume that their attacks to threaten the peace in Northern Ireland. While they say they are for the unity of the country, their actions indicate otherwise.
I definitely think that the attacks by the real and continuity IRA will threaten peace in Northern Ireland. I think that the region is already in a stage of turmoil that peace talks are a difficult tactic to attain their goals of peace. With the recent attacks, I think the possiblity of peace will be even more difficult.
It will threaten the peace that is in Ireland. They will go down kind of quickly and the war will be a long drawn out process eventually. They are not promoting peace there is always a hidden agenda against a country that has an army that is ready to go to war.
Attacks by the IRA will not threaten peace in Northern Ireland. The extremist IRA is now a minimal threat that does not have the potential to harm a lot of people as it used to. There are not a lot of people left who take violent action on these political thoughts. Peace is normally kept in Northern Ireland these days.