CHELSEA, Manhattan (WABC) -- It's been a century since someone nearly as young as Zohran Mamdani has become mayor of New York City, but it's his 74-year-old incoming first deputy mayor that believes the mayor-elect will put to rest the "too young" narrative.

"There's nothing that the mayor-elect has put forward that I don't believe in and believe is achievable," said Dean Fuleihan, the incoming first deputy mayor.

Fuleihan says failure is not an option. In fact, New York's next first deputy mayor relishes the challenge.

If Zohran Mamdani is the man with the plan, Fuleihan has to make it work.

WATCH | N.J Burkett's extended interview with Dean Fuleihan

"It starts with a complete belief that we can actually achieve those things and address this crisis," Fuleihan said.

He believes "aff

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