Riots In Argentina, Adrian Escobar Replaces Norma Armour As US Ambassador

In July, the United States accused Argentina of providing aid and comfort to the excellent, leading to a diplomatic break. As a result, the US ambassador, Omar, was recalled, and Adrian Escobar was sent as the envoy to Argentina.

What does the phrase 'aid and comfort to the excellent' imply in the context of the text?

What is the name of the envoy mentioned in the text?