Historical clue formulations

• Make no effort to stop something — 2022-07-09
• Do nothing — 2022-04-28
• Remain idle — 2019-04-02
• Not get involved while something's happening — 2018-12-24
• Make no effort to stop something — 2018-01-27
• Not get involved — 2018-01-25
• Bide one's time — 2013-10-13
• Be indifferent — 2009-06-26
• Not get involved — 2008-08-08
• Wait — 2005-07-15
• Fail to act — 2002-07-23
• Remain unmoved — 1999-09-26