have been pontificating
Present perfect progressive conjugation of pontificate. There are other translations for this conjugation.

pontificate

Allow me to mention another plain truism, and now I am addressing in particular those who have been pontificating on militarisation in the House for some time.
Permítanme mencionar otro hecho que salta a la vista, y ahora me dirijo en concreto a quienes durante algún tiempo en esta Cámara han pontificado la militarización.
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