DUP East Derry MP Gregory Campbell has said that Martin McGuinness's decision to resign as deputy First Minister will not lead to success for Sinn Fein.
Mr Campbell said: "Sinn Fein seems to think that by storming out along with ludicrous statements they will succeed where their past tactics have failed.
"Election or no election, talks or no talks, their intransigence and their belligerence at the moment will be as useless as their previous stance."
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