Donald Trump says it is "an absolute necessity" for our country to own Greenland.
He says the U.S. should take back the Panama Canal unless the "ridiculous" shipping fees are lowered.
He threatened that any Republican who opposed him on the bill to avoid a government shutdown can and should be primaried.
The president-elect is earning his reputation as a disruptor, with enough influence over what is now his party to blow up carefully negotiated bipartisan compromises. Let’s look at each of these.