Trump's Panama Canal threat, German Christmas market suspect, Nissan-Honda and holiday booze

President-elect Donald Trump has threatened to reassert U.S. control over the Panama Canal, accusing Panama of charging steep prices to use the passage. A man suspected of ploughing a car through crowds at a German Christmas market and killing five people faces multiple charges of murder and attempted murder. Nissan and Honda eye a possible merger. And inflation has left some drinkers looking for ways to rein in their holiday booze spending. Sign up for the Reuters Econ World newsletter here. Listen to the Reuters Econ World podcast here. Find the Recommended Read here. Visit the Thomson Reuters Privacy Statement for information on our privacy and data protection practices. You may also visit megaphone.fm/adchoices to opt out of targeted advertising. Learn more about your ad choices. Visit megaphone.fm/adchoices