Secretary of State Marco Rubio says President Donald Trump’s desire to acquire Greenland and retake control of the Panama Canal is driven by legitimate national security interests stemming from growing concerns about Chinese activity in the Arctic and in Latin America.

Secretary of State Marco Rubio said on Thursday he had "zero doubt" that China has a contingency plan to shut down the Panama Canal in the event of a conflict with the U.S. and that Washington intends to address what it sees as a national security threat.

The White House says President Donald Trump will put in place 25% tariffs on imports from Canada and Mexico and 10% tariffs on goods from China effective on Saturday, The White House on Friday provided no word on whether there would be any exemptions to the measures that could result in swift price increases to U.

President Donald Trump affirmed on Thursday that imports from U.S. allies Mexico and Canada will be hit with a 25% tariff starting on Saturday. Speaking to the press from the Oval Office, Trump said that his administration will follow through in announcing tariffs on America’s neighboring countries for “a number of reasons”—chiefly among them being an alleged influx of migrants at the U.