On 24 February 2019, Blumenthal posted an article to "The Grayzone" website about clashes on 23 February on the Colombia–Venezuela border during the 2019 Venezuelan presidential crisis and the shipping of humanitarian aid to Venezuela. The US government and media had stated that humanitarian aid trucks that were attempting to enter Venezuela from Colombia had been deliberately set on fire by Nicolas Maduro’s forces. In his article, Blumenthal wrote that "the claim was absurd on its face". He said footage from "Bloomberg News" showed that opposition protesters on the Francisco de Paula Santander bridge in the border were preparing Molotov cocktails, "which could easily set a truck cabin or its cargo alight". He referred to having seen similar situations during his reporting on the West Bank.