The phrase "a more assertive and" is correct and usable in written English.
It can be used when describing a quality or characteristic that is being enhanced or intensified, often in relation to behavior or communication style.
Example: "In order to succeed in negotiations, one must adopt a more assertive and confident approach."
Alternatives: "a bolder and" or "a stronger and".
"Kodo gives us a more assertive and provocative presence," he said.
He is steering Russia on a more assertive and independent course than his predecessor, Boris Yeltsin.
A more assertive and independent Japan promises to do much more for East Asia and the United States than a Japan that defers to Washington.
Messiaen became, from the time he met her, a more assertive and more public composer, and he paid far more attention to the piano.
"I would like the secretary general to make a more assertive and firm stand in defense of freedom of expression," Mr. Mahoney said.
Security analysts and regional leaders say that nasty maritime standoffs over the contested islands — due in part to a more assertive and far-reaching China — have made a code of conduct more necessary than ever.
Aside from the explosive situation in the Middle East and the threat of Islamist terrorism, the west is now confronted with the rise of Asia, the return of a more assertive Russia, and new energy and environmental challenges.
In the last few years we have seen a dramatic deterioration of our security, with a more assertive Russia and turmoil across north Africa and the Middle East.
Political analysts say Japan is slowly raising the capabilities of its forces to respond to a more assertive China and a nuclear-armed North Korea — and to take a first, halting step out of the shadow of the United States, its postwar protector, which many Japanese fear may one day no longer have the will or ability to defend Japan.
Their faces aren't identical — Bejar the artist has a more assertive brow and a narrower face — but the resemblance in the images is pretty close.
Their faces aren't identical Bejar the artist has a more assertive brow and a narrower face but the resemblance in the images is pretty close.
