International Red Cross and Red Crescent Movement

Obama legacy: Handing Trump a broad view of war powers

After eight years as a wartime president, Barack Obama is handing his successor an expansive interpretation of the commander in chief's authority to wage war around the globe. And that reading has continued to grow even as Obama prepares to pass control to Donald Trump.

In his final weeks in office, Obama has broadened the legal scope of the war on extremism, the White House confirmed Monday, as it acknowledged for the first that the administration now asserts it is legally justified to take on the extremist group al-Shabab in Somalia.

The determination is based on an expanded application of a 9/11-era use of force authorization, a statute Obama has repeatedly leaned on to...

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