As with many crises, this one began with a disagreement over money, specifically the surprise currency exchange by the Western powers of the new Deutsche Mark to replace the seriously debased (by the Russians overprinting) Reichsmark.
Our last mention of the currency swap was in 2016's "Whoa: India Messes With Currency Big-Time":
Although not as dramatic* as the 1948 German currency reform when 10 Reichsmarks were swapped for 1 Deutsche Mark in the Western zones of occupation, this is still a stunning move....We'll have more on Tuesday, another anniversary of the events of '48 - '49.
***...*Four days later the Soviets blockaded the city of Berlin to starve and/or freeze the population into submission which led to one of my favorite examples of clear thinking...