SLD
As the NATO allies focus on original threats and those posed by historic competitors,the need to reinforce North Atlantic defense is coming back into focus. As the former head of NORAD, Admiral Gortney, or assign it in an interview shortly before his departure:assign in simple terms,we need to shape a more integrated air and maritime force that can operate to defend the maritime and air approaches to North America as well as North America itself.
We can look at the evolving threat as a ten o'clock and a two o'clock fight, because they originate from the ten and two.
And the ten o'clock fight is primarily...
Source: realcleardefense.com