President Nicolás Maduro of Venezuela had become a pariah among fellow Latin American leaders as his beleaguered country staggered toward dictatorship. But a threat by President Trump to use the American military against Mr. Maduro’s government has united those leaders in a different direction: demanding that the United States keep out of the region’s affairs.
“The possibility of a military intervention shouldn’t even be considered,” Juan Manuel Santos, Colombia’s president, said on Sunday during a visit by Vice President Mike Pence to the region. “America is a continent of peace. It is the land of peace.”
Mr. Santos’s response to Mr. Trump’s remarks — echoed by many other Latin American leaders in recent days — could endanger a fragile alliance against what many fear is the first dictatorship to emerge in the region in decades, analysts say.