With deadly precision, the Trump administration has launched dozens of attacks on small boats in the waters off South America, killing nearly 200 people in a campaign U.S. officials say is meant to curb the flow of illicit drugs to the United States.

But almost nine months into the operation, epidemiologists, addiction scientists and public health experts say cocaine, by far the top drug smuggled out of South America, is as easy to get in much of the United States as it was before the strikes began.

The findings — based on evaluations of street prices, lethal overdoses, purity of samples and drug seizures at U.S. borders — raise questions about the effectiveness of the largest U.S. military deployment in Latin America in decades.

Here is more from the NYT.  And here is another report on supply elasticity, note that European airlines are still flying.