Analysis Summary:

The article is mostly accurate, with the core claim of the security consultant's death and his work for the U.S. State Department being verified by multiple sources. The detail about dining with colleagues is also supported. There is minimal bias, presenting the information in a straightforward manner.

Detailed Analysis:

• Claim:** César Guzman was killed in a cartel ambush.
  • Verification Source #1, #2, #3, and #4 all confirm that a Mexican security consultant who worked for the US State Department was killed in a cartel ambush. This supports the claim.
• Claim:** César Guzman worked for the U.S.
  • Verification Source #1, #2, #3, and #4 confirm that the victim worked for the U.S. State Department. This supports the claim.
• Claim:** César Guzman was dining with two colleagues when gunmen opened fire.
  • Verification Source #5 states that he was killed while dining with two fellow instructors. This supports the claim.
• Claim:** A retired FBI agent who worked with Guzman provided the information.
• The article states that a retired FBI agent who worked with Guzman provided the information about him dining with colleagues. None of the provided sources confirm this specific detail. This claim is unverified by the provided sources.

Supporting Evidence/Contradictions:

• Agreement:** Verification Source #1, #2, #3, and #4 all agree that a Mexican security consultant who worked for the U.S. State Department was killed in a cartel ambush.
• Agreement:** Verification Source #5 supports the claim that he was dining with two colleagues.
• Lack of Coverage:** None of the provided sources confirm that a retired FBI agent provided the information.