@MLClark Relying on you for insight regarding the Ecuador assassination and Colombia. Hopefully this doesn't escalate into conflict.
Oh it won't! Two years ago a Colombian exmilitary group assassinated the president of Haiti, and the culprits were found and extradited. This time they found the people zippity quick. Colombia is a state with many dissident paramilitaries and active cartels (a bit like what parts of the US want the country to turn into!), so the mere act of Colombians being involved doesn't constitute an attack between state governments. Fascinating stuff, with a lot of moving parts.
@MLClark Thank you for the explanation. I keep thinking about how World War I started.
So basically it would be like one of our lunatic militias being hired to murder a Mexican presidential candidate.