Key developments this week include a policy change for Pentagon officials and the ongoing government shutdown.
President Donald Trump announced the US will eliminate assistance to Colombia and enact tariffs on its exports.
Trump referred to Colombia's leader Gustavo Petro as "an illegal drug leader" who is "low-rated and very unpopular."
Trump stated that Colombia "does nothing to stop" drug production and has "no fight against the drugs," calling it a "drug manufacturing machine" with "a lunatic" for a president.
Author's summary: Trump imposes tariffs on Colombia and ceases aid.