Jonathan Powell out as UK National Security Adviser by...?

This market will resolve to “Yes” if Jonathan Powell ceases to be the UK National Security Adviser for any period of time between market creation and the specified date, 11:59 PM ET. Otherwise, this market will resolve to “No”. An announcement of Powell's resignation, removal, or other formal departure from this position before this market's end date will immediately resolve this market to "Yes", regardless of when the announced resignation/removal/departure goes into effect. The resolution source for this market will be official information from Jonathan Powell or the government of the UK, however a consensus of credible reporting may also be used.