Ecuador has expelled a military contingent from the US embassy:

Ecuador has ordered 20 U.S. Defense Department employees attached to the U.S. Embassy in Quito to leave the country next week, U.S. officials confirmed, further straining an already rocky relationship between President Rafael Correa and the Obama administration.

The Ecuadorean government made the request on April 7, asking the U.S. embassy in Ecuador to end the activities of the Security Cooperation Office by Wednesday, said Jeffrey Weinshenker, an embassy spokesman. He said that the civilian and military workers had been mainly engaged in joint programs with Ecuador to fight human smuggling and the drug trade.

………

In an email, U.S. State Department spokeswoman Angela Cervetti said, “[the U.S.] regrets that the outcome will severely limit our bilateral security partnership. Our close military cooperation over the past four decades has resulted in significant advances against drug trafficking, human trafficking, terrorism, and other transnational crime.”

But the Ecuadorean embassy in Washington characterized the closing of the Security Cooperation Office as part of an agreement with the Obama administration. “A core group of U.S. military attaches will remain, as typical for normal bilateral relations,” an embassy statement said.

In January, Mr. Correa had said that Pentagon workers were used to “infiltrate” Ecuador. The order ousting the Americans came days after Mr. Correa wrapped up a U.S. tour that included talks at Yale and Harvard universities and television interviews where he described himself as a “modern socialist” who wanted to improve relations with the U.S.

When juxtaposed with this:

Correa said he became aware of what he described as a bloated US military presence in his country after learning that four Pentagon personnel were aboard an Ecuadoran military helicopter that came under fire in October near the border with Colombia.

When you consider things like the role of the US Army School of the Americas, which educated generations of military juntas and coups in Latin America, it has to be a legitimate matter of concern for any government that military personnel and contractors are operating in military operations without the knowledge of the sponsoring government.

This is particularly of concern for someone like Correa who is not particularly friendly to the US agenda in that part of the world, particularly when one sees the sort of activities that the US engages in its neighbor Venezuela, where it is clear that there is an active attempt to destabilize the government.