The blog entry is not very articulate.
1-- false reduction for length without depth -- I suppose this means that he speaks succinctly but does not really say anything substantial.
2-- kid on the carousel trying to grab the brass ring -- this is an old cultural reference. Years ago, the carousel or merry-go-round of the local carnival or amusement park held a special prize: a stationary peg holding a brass ring was mounted just out of reach of the riders on the periphery of the ride, and some, to show their derring-do, would attempt to grab it as they went round. Those who succeeded received some sort of small gift from the carousel operator, I believe. Here it suggests Kissinger was just trying to impress, not make a serious contribution to political analysis.