The Danes have tried everything to pacify an unpredictable president. Now they may be reaching their red line.

The Danish Ministry of Defence said Wednesday that it is ramping up its military presence around Greenland, and Sweden sent military officers to the island.

Denmark and Greenland are stepping up their military presence on the island and allied reinforcements are expected to follow with Sweden confirming a deployment of military officers to the Arctic at Denmark’s request, according to a statement by prime minister Ulf Kristersson.

Yesterday, after Greenland’s prime minister, Jens-Frederik Nielsen, vowed to cast his lot with Denmark over the United States, Trump said that he didn’t “know anything about” Nielsen but that such a choice would be a “big problem for him.”

The White House and Denmark contradicted each other in public about what they had agreed to this week as President Trump continued to demand U.S. ownership of Greenland.

Republican lawmakers are scrambling to contain President Donald Trump's threats of taking possession of Greenland, with some showing the most strident opposition to almost anything the Trump administration has done since taking office.

Congressional Republicans criticize ‘absurd’ idea as polls show most Americans oppose taking control of territory