The phrase "assert his influence" is correct and usable in written English.
It can be used when discussing someone's ability to exercise power or control over a situation or group.
Example: "In the meeting, he sought to assert his influence over the decision-making process."
Alternatives: "exert his influence" or "exercise his influence."
The chancellor is also keen to assert his influence in the international realm as he moves closer to No 10.
By deftly exploiting nationalist impulses and economic grievances, the president used every opportunity to build a power base and assert his influence.
Boosted by the news that the terminal ALS he was battling was, in fact, misdiagnosed, he now has a new lease of life and attempts to assert his influence over his Empire record label from inside.
The announcement is also the latest in a series of steps Mr. Bloomberg has taken in a bid to assert his influence nationally as his final term as mayor enters its twilight — and after he appears to have abandoned his own hopes of one day becoming president.
In this way Hayam Wuruk was able to assert his influence in restless areas, enforce homage from territorial lords, reassure village elders by his visits, verify land rights, collect tribute, visit holy men in the countryside for his own spiritual enlightenment, and worship at Mahayana, Shaivite, and ancient Javanese holy sites.
ALBANY -- Declaring that "government has failed to do what government should be doing," Gov. Andrew M. Cuomo moved on Monday to assert his influence over New York State's education policy, appointing a former Citigroup chairman to lead a new commission charged with improving student performance.
The idea is that he is asserting his influence over the Dodd-Frank rule-making process.
Today, Mr. Pandit is still at the helm, and through a series of small but important moves, he is quietly asserting his influence.
Mr. Orban has been reducing the power of independent institutions and asserting his influence since winning elections last year, bucking objections from the United States and the United Nations.
Motorola Solutions Inc. has bought back $1.2 billion of its shares from Carl Icahn, reducing the stake of a long-time investor who has asserted his influence over the company in recent years.
Despite resigning, Fownes Luttrell had asserted his influence and control over both seats and, in 1780 his son Francis was elected alongside John Fownes Luttrell, who remained one of the MPs until 1806 and went on to sit again from 1807 to 1816; his other son, Thomas, and John's son (also called John) were also elected subsequently.
