Ukraine's President Volodymyr Zelensky speaks in Kyiv. File photo
Ukrainian authors led by "punk poet" Sergiy Zhadan will feature prominently at the world's biggest publishing event.
Zelensky will make his speech Thursday via video link at the five-day annual fair, which attracts tens of thousands of visitors from around the world and hundreds of exhibitors.
His wife, Olena Zelenska, is also due to speak at a side event.
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The fair "has maintained close ties to the Ukrainian book industry for many years", said the event's director, Juergen Boos.
"We therefore want to offer direct support to our Ukrainian colleagues now as they withstand the Russian attack."
The 2022 edition marks a return to near normal after what Boos called "two difficult years" because of the coronavirus pandemic.
The 2020 fair was almost fully digital, while last year's was muted with many authors joining only via video link.
This year's event has no restrictions, although the number of countries represented — over 80 — is still below the level at the last pre-pandemic fair in 2019.
Agence France-Presse