Sri Lanka, March 15 -- US President Donald Trump, a real estate developer in his real life, seemingly has a grand ambition of annexing at least four countries and territories - Canada, Gaza, Panama (or at least the Panama Canal) and Greenland, the world's largest island if one disregards Australia, which is considered as a continent.

President Trump had an obsession with Greenland even during his first term, but it faded away as other priorities took hold. But long before Trump, the US was toying with the idea of acquiring Greenland - in 1867, 1910, 1946 and 1955. Back in office after four years, Trump has amplified his demand that Denmark, which owns the island but actually controls only the foreign and defence policies, hand over the i...