Proposed no-fly zone in the Russian invasion of Ukraine

"[4] Later that day, American White House Press Secretary Jen Psaki stated that American troops would not establish a no-fly zone over Ukraine, stating that "it would essentially mean the US military would be shooting down planes, Russian planes," which she described as "definitely escalatory, that would potentially put us in a place where we are in a military conflict with Russia.

[8] On 5 March, Russian President Vladimir Putin stated that any movement towards a no-fly zone "will be considered by us as participation of the respective country in an armed conflict.

[11][12] On 18 March, the Russian-backed separatist government of the Donetsk People's Republic claimed that Russia would establish a no-fly zone over the Donbas region of Ukraine.

"[14] Former Ukrainian Minister of Defence Anatoliy Hrytsenko argued that a no-fly zone was needed to "stop Russia from launching devastating missile strikes, dropping bombs or undertaking large-scale air-assault operations using helicopters and aeroplanes.

"[21] Florida Congresswoman María Elvira Salazar told The Grayzone that she supported a no-fly zone, though she admitted she didn't know what it meant.

"[24] Joshua D. Zimmerman, professor of history at Yeshiva University in New York, published two articles in support of the no-fly zone over Ukraine using historical examples in Politico and The Daily Beast.

[30] Jane Boulden of the Royal Military College of Canada stated that there was "zero question that to engage in some kind of no-fly zone over Ukraine is to effectively enter into a war with Russia.

"[35] Christopher Michael Faulkner and Andrew Stigler of the Naval War College have argued that Russia "is a vastly different target than that of any prior airspace ban in the past 30 years," saying that it would be the first nuclear power to be subjected to a no-fly zone, and that it would present a "severe risk for escalating the war", while adding that there was also a risk of tactical mistakes being made during enforcement of a no-fly zone, such as a repeat of the 1994 Black Hawk shootdown incident.