North Korea claimed to have successfully placed a spy satellite into orbit with its third launch attempt this year, demonstrating the nation's determination to build a space-based surveillance system.

The failed launch prompted neighboring Japan to issue brief a "J-alert" ordering some residents to evacuate to safe places as the North Korean rocket flew over its southernmost islands of Okinawa.

A Russian satellite hatched from another satellite fired a projectile last week that American military officials say is meant to take out other satellites. Moscow says it's an inspection tool.