The United States announced on Sunday that it has left a treaty that allowed Russia to conduct unarmed, reconnaissance flights over the U.S. The Open Skies treaty was negotiated in 1992 and allowed each country signing the treaty in 2002 the right to observe the others, according to Fox News. However, irked by the limitations that Russia imposed on America when it sought to conduct surveillance over Russia, the Trump administration decided earlier this year to pull out of the treaty. Secretary of State Mike Pompeo said that ending the treaty was a matter of common sense. “The Open Skies Treaty was meant to contribute to international security, but it has been twisted and perverted in its implementation and now serves Russian purposes inimical to that security,” Pompeo said.