Just past noon yesterday, in the sunbaked courtyard of Government Buildings, Minister for Finance Paschal Donohoe approached his podium, removed his mask, and prepared to give an update on his stance on the OECD-brokered plan for a 15 per cent global minimum corporate tax rate, which Ireland has yet to sign off on. With a drop of sweat on his brow and wrestling his speech papers to stay put against the wind, the minister stood his ground, reaffirming his position that Ireland should be allowed to maintain its 12.5 per cent rate.  Just hours earlier, French-based OECD tax director Pascal…