Michael D Higgins said the absence of certain international leaders at the mass was "very significant", in an apparent reference to Mr Netanyahu.
Speaking to reporters after attending the funeral of the late pontiff, Mr Higgins questioned how some world leaders could "remain silent" about people starving in Gaza.
It's very significant not only who is at the event today - but who is missing - Michael D HigginsThe President was making wider remarks on the vocation of diplomacy in the context of Francis' life.
Mr Higgins said: "It's very significant not only who is at the event today - but who is missing."
Mr Netanyahu did not attend the funeral, with Israel being represented by its ambassador to the Holy See.
Comment: See also: Putin announces 72-hour Victory day ceasefire
From the same source: Regarding the UK, there was also: UK could stage provocation against Russia - Moscow's spy chief.
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