Ukrainian's president asks the US to establish "no-fly zones" to protect Ukraine from Russian airstrikes but Putin warns that it would lead to catastrophic consequences.

A new poll shows a broad majority of Americans think the United States should work with NATO to establish "no-fly zones" to protect Ukraine from Russian airstrikes.

US Defense Secretary Lloyd Austin has denied any plans to impose a no-fly zone (NFZ) over Ukraine, arguing that any such attempt could spark an all-out war between the world's two largest nuclear powers.

China says the United States has flown a spy aircraft into a Chinese no-fly zone during live-fire military drills, calling the flight “naked provocation.”