On Tuesday, a Russian fighter jet struck a U.S. surveillance drone over the Black Sea, resulting in the U.S. bringing down the unmanned aerial vehicle. This incident has raised tensions between the two countries and appears to mark the first time since the height of the Cold War that a U.S. aircraft was brought down after being hit by a Russian warplane. U.S. Air Force Gen. Hecker called the incident a “brazen violation of international law” and the U.S. is currently investigating the matter.