путиным

путиным

"Путиным" is the instrumental case of "Путин," meaning "by/with Putin" (referring to Vladimir Putin in context).

Here, 'путиным' is the instrumental case of 'Путин', indicating the agent who suggested the approach.

Этот подход был предложен президентом путиным.

This approach was suggested by President Putin.

In this sentence, 'путиным' is used in the instrumental case to attribute the presentation of ideas to Putin.

Обсуждая идеи, представленные путиным, мы нашли интересное решение.

While discussing ideas presented by Putin, we found an interesting solution.

'путиным' again appears in the instrumental case to show that Putin is one of the authors of the book.

Книга написана путиным и его коллегами.

The book was written by Putin and his colleagues.