Volte-face

There was a complete volte-face on taxes that occurred.

Source: tatoeba (6876701)

Psychoanalysis has sprung many surprises on us, performed more than one volte face before our indignant eyes.

Source: wiktionary

Then, on July 15, 1971, came Nixon's sudden announcement that Kissinger had just made a secret trip to Peking and that he himself had accepted Chou En-lai's invitation to visit the Chinese mainland sometime before May, 1972. This was instantly interpreted in chancelleries all over the world as a sign that the United States was about to execute a volte-face in its China policy.

Source: wiktionary

My next stop is Oxford, which has also grown with the addition of new platforms to accommodate the Chiltern Railways service to London via Bicester – although, short sightedly, the planned electrification from Paddington was canned. Evidence of the volte-face can be seen along the line at places such as Radley, where mast piles are already sunk or lie discarded at the lineside.

Source: wiktionary