The Washington Post writes about this.
According to him, ATACMS are not currently located on the territory of Ukraine. At the same time, Zelensky said that he plans to use missiles to attack Crimean airfields.
In September 2022, the press secretary of the Russian president, Dmitry Peskov, said that Crimea is an integral part of Russia and claims to Russian territory will receive a proper response.
Russian leader Vladimir Putin has repeatedly emphasized that the issue of Crimea is closed for Russia, and the referendum on the peninsula was held in strict accordance with international law.
Crimea became a Russian region after a referendum took place there in March 2014: the majority of residents were in favor of reunification with Russia.