FT Professional Glossary
Reiterate
To repeat something that you have already said, especially to emphasise it
Example usage from an FT article:
The leaders of all five parties in Greenland’s parliament joined forces to condemn Trump and reiterate that they want to be neither American nor Danish but Greenlandic.
Excerpt from "More brutal than buying it: bewilderment over Donald Trump’s Greenland obsession turns to fear"