As is often the case before the Olympics begin, the 2016 Rio de Janeiro Games have been besieged with harrowing doubts about the host city's readiness and ability to stage the colossal sports event.
But never has the Olympic apprehension been so grave, nor has the distress been spread across so many fronts as what Rio faces.
The irony is that the most discussed concern—fears about the Zika virus, which will keep many of the world's marquee golfers and other athletes from participating—may well turn out to be the least of Rio's Olympic problems.