US military
U.S. soldiers 2nd Infantry Division, Stryker Battalion Combat Team from Fort Lewis, Washington participate in Key Resolve/Foal Eagle exercise on March 7, 2011 in Pocheon, South Korea.
  • During the Cold War, the US had the capacity to fight two wars simultaneously. 
  • Amid rising global conflict, US military planning is again under scrutiny. 
  • An analyst told Business Insider that US had shifted its doctrine in response to new threats. 

At the summit of US power, the Pentagon had a clear task: ensure the US could fight and win against two adversaries at the same time.