Why Trump’s pledge to defend Qatar is so extraordinary

The fact that Trump is doing this unilaterally is, in itself, remarkable. The Constitution explicitly gives the power over treaties to the Senate, and here’s the president bypassing Congress over something as serious as potentially committing the US military to war. Not only because Trump is asserting a power that is traditionally the Senate’s, but because he’s making a security guarantee on behalf of a country that many Republicans are quite suspicious of (Read more at CNN).