(the) shifting sands of
US /ðə ˈʃɪftɪŋ sændz əv/
UK /ðə ˈʃɪftɪŋ sændz əv/
1.
a situation that is constantly changing and difficult to predict or control
:
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Navigating the political landscape is like dealing with the shifting sands of power.
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The company struggled to adapt to the shifting sands of the market.