Some places on Earth are completely off-limits to aircraft. These no-fly zones exist for national security, cultural respect, or sheer safety concerns. Pilots are expected to avoid them entirely, and ...

The sky is a wide-open expanse of seemingly endless open air. But even thousands of feet above the ground, there are still rules that must be followed. Planes can't simply fly wherever they wish.

Since Russia's invasion of Ukraine began just over one month ago, Ukrainian President Volodymyr Zelenskyy has made numerous pleas to NATO and its allies to impose a no-fly zone over the country. In an ...