North Korea on Sunday accused U.S.President Barack Obama of unleashing the "grumble of a loser,"arguing he is preoccupied with hostilities towards Pyongyang.

The North's foreign ministry took issue with Obama's remarks last week that the communist country is likely to collapse mainly due to the Internet-driven inflow of information.

"The recent wild remarks made by Obama are nothing but a poor grumble of a loser driven into a tight corner in the all-out stand-off with the DPRK," the ministry's unnamed spokesman told the Korean Central News Agency. "This is little short of admitting himself that the U.S. lacks ability to stifle the DPRK and that a military option is not workable."

The DPRK is the acronym for the North's official name, the Democratic People's Republic of Korea.

It's gravely mistaken if the U.S. believes it can stifle the North with sanctions and pressure, added the spokesman.

In an interview on YouTube, Obama pointed out that the North is "the most isolated, the most sanctioned, the most cut-off nation on Earth" and it is on course towards collapse in the Internet era. (Yonhap)