Former EPA chief Dr. Vincent Adams—petroleum engineer, former U.S. Department of Energy official, and the man who forced ExxonMobil to comply outside the contract—says Ambassador Theriot’s position is factually wrong, legally flawed, and an affront to Guyanese sovereignty.

GEIORGETOWN. Guyana, April 5, 2026 - Calvin G. Brown - When United States Ambassador to Guyana Nicole Theriot declared that renegotiating the 2016 Stabroek Block Production Sharing Agreement would be “incredibly dangerous” and send “a terrible signal to international investors,” she perhaps did not anticipate the source of the rebuttal she would receive.