The Foreign Affairs Minister says Northern Ireland needs the DUP to choose a new leader quickly.
Edwin Poots resigned last night after just 21 days in the job.
It follows a revolt within the party over a deal with Sinn Féin and the British government on Irish language laws.
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His decision to nominate Paul Givan as First Minister wasn't backed by DUP representatives.
Minister Simon Coveney says the party needs the space to choose a new leader: