New Delhi, Jan. 14 -- President Donald Trump's ambition to acquire Greenland is gaining momentum, with a senior administration official suggesting that meaningful US action on the Arctic island could come within "weeks or months."

Thomas Dans, Trump's Arctic commissioner and a key advocate of the plan, said the president is determined to move quickly on Greenland, which is part of the Kingdom of Denmark but holds vast mineral wealth and strategic military importance.

"This is a train route with multiple stops," Dans told USA Today. "Things could move on an express basis, skip the local stops and go direct to the main station. That's where President Trump wants to move it - at high speed."

While Dans believes progress on negotiations co...