The book 'Доля вероятности' by Ребекка Яррос is a romance novel that tells the story of two main characters, Изи and Нейт, who go through a tough journey to be together. The story is set against the backdrop of Afghanistan and the military, which adds to the drama and significance of the characters' feelings. The author's use of descriptive language and vivid imagery brings the story to life, making it a compelling read. However, some of the conflicts and situations in the book seem forced and could have been resolved with better communication between the characters. The ending is predictable, but the romantic story still manages to evoke emotions in the reader. The author, Ребекка Яррос, is known for her work in different genres, and it's interesting to see her take on romance. The book is a good example of how life and health can be affected by relationships and the importance of communication and trust. Overall, the book is a romantic and emotional read that explores the complexities of human relationships and the challenges of life and health.