The phrase "affirming his commitment to" is correct and usable in written English.
It can be used when someone is expressing or reinforcing their dedication or promise towards a particular cause, goal, or responsibility.
Example: "The CEO issued a statement affirming his commitment to sustainability and environmental responsibility."
Alternatives: "reiterating his dedication to" or "confirming his pledge to".
Trump upset NATO leaders by not personally affirming his commitment to the article.
The Assembly speaker, Sheldon Silver, a Manhattan Democrat, on Monday sent out a press release citing the Siena poll and affirming his commitment to advocating for the tax's continuation.
"We are pleased that Senator Hagel recognized the importance of retracting his previous statement about Ambassador Hormel and affirming his commitment to Don't Ask, Don't Tell repeal and L.G.B.T. military families," said Allyson Robinson, an Army veteran and executive director of OutServe-SLDN, a gay rights organization.
An organizer of the demonstration said, "we need to be setting aside spaces to talk" about "victim-blaming". Last Wednesday, Northwestern's president, Morton O. Schapiro, wrote an op-ed article in The Wall Street Journal affirming his commitment to academic freedom.
A product of the highly distinctive internal political culture of the Labour party in Scotland, as Brown's impassioned eve-of-referendum speech in Glasgow attested, he was almost most comfortable and effective speaking to a Scots audience and when affirming his commitment to Scotland's national interests, the importance of Britishness, and Scotland's place within the British union.
Pascrell hasn't received any complaints about his leadership so far, and he sent a letter to his colleagues the day after the election affirming his commitment to remaining the top Democrat on the panel.
(The current mayor, Aníbal Gaviria, has affirmed his commitment to continuing on this path).
Mr. Gore repeatedly affirmed his commitment to the program last night.
Murdiono, a spokesman for Mr. Suharto, said the Indonesian President affirmed his commitment to the reforms demanded by the I.M.F.
Asked about the need for increased IAEA authorities, Amano affirmed his commitment to keep pushing on the Additional Protocol.
He affirmed his commitment to higher learning by founding a scholarship in his mother's name to help students in need attend university to study the sciences.
