"While the symbolic move to suspend Greece of its voting rights at one meeting makes no practical difference, it marks a constitutional watershed and represents a crushing loss of sovereignty. "We certainly won't let them off the hook," said Austria's finance minister, Josef Proll, echoing views shared by colleagues in Northern Europe. Some German officials have called for Greece to be denied a vote in all EU matter until it emerges from "receivership".The EU has still refused to reveal details of how it might help Greece raise €30bn (£26bn) from global debt markets by the end of June. Investors are unsure whether this is part of Kabuki play of "constructive ambiguity" to pressure Greece and keep markets guessing, or reflects the deep reluctance by Germany to be drawn deeper in an EU fiscal union. Greek bonds sold off as ten-year yields jumped to 6.42pc, but the euro rallied to $1.3765 against the dollar as broader issues resurfaced in currency markets."