* U.S. strike left first known survivors since start of offensive * Two survivors transferred to U.S. warship after helicopter rescue * Trump is overseeing a military buildup in Caribbean with some 6,500 troops (Adds Trumps comments in paragraph 1,3,6,7,9) By Phil Stewart and Idrees Ali WASHINGTON, Oct 18 (Reuters) – The United States is sending the two survivors of a Thursday strike in the Caribbean to their home countries of Colombia and Ecuador to be detained and prosecuted, U.S. President Donald Trump said on Saturday. The move, which was first reported by Reuters, means that the U.S. military will not have to grapple with thorny legal issues surrounding military detention for suspected drug traffickers, whose alleged crimes do not fall neatly under the laws of war, legal experts say.
UPDATE 3-US returning Caribbean strike survivors to Colombia and Ecuador, Trump says

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