Taoiseach Micheál Martin is set to face questioning about resigning as Fianna Fáil party leader while on an official visit to Japan and Singapore.
Mr Martin is due to touch-down in Tokyo on Tuesday on a visit which hopes to strengthen Irish-Japanese relations.
Mr Martin will meet with the Japan Ireland Parliamentary Friendship League and attend an Irish community and Japanese reception which will be attended by Irish ambassador to Japan, Paul Kavanagh on Tuesday.