As I understand it, the old system was:

- UK, Canada, Guyana, probably more countries shared intelligence on suspected drug vessels in Caribbean

- US Coast Guard accosted said vessels, searched them, arrested everyone if anything illegal was found.

Now it's:

- UK, Canada, Guyana, have all said they're not going to share intelligence, decreasing(by whatever percentage) the chances of finding a drug smuggling boat, and increasing the chance of it making its way to the USA.

- US Navy blows up what boats it does find without checking them for drugs, increasing(by whatever percentage) the chance of killing innocents, and degrading intl law & norms.

What does the US benefit from this new policy?

(Edited for formatting)