10 things you need to know today: December 18, 2016

1. President-elect Donald Trump weighed in on China's seizure of a U.S. oceanographic drone early Saturday, tweeting, "China steals United States Navy research drone in international waters - rips it out of water and takes it to China in unpresidented act." He soon replaced the typo-marred post with one calling the situation "unprecedented" -- though not before the neologism began trending on Twitter with suggestions that Trump not be president -- and later on Saturday tweeted that "We should te...