Six times running, the Bank of England has chosen stillness over action — but stillness is becoming harder to justify. With inflation at its highest in half a year, driven by a Middle East conflict that shows no sign of relenting, and with both the European Central Bank and the US Federal Reserve already moving to raise rates, the Bank finds itself at the edge of a conditional promise its governor made weeks ago. Thursday's decision to hold at 3.75% may be the last pause before the turn.