A CNN report reviews the major shift in the relationship between US President Donald Trump and the late Republican Senator Lindsey Graham, after the latter was one of Trump's most prominent critics during the 2015 Republican primaries, before becoming one of his closest allies in Washington.

In the following years, Graham emerged as a strong defender of Trump's policies, playing a prominent role in a number of important issues, including supporting Brett Kavanaugh's nomination to the Supreme Court and foreign policy matters.

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