Calls from within the U.S., in particular, urge the Trump administration to make a bold switchover in the policy, facing up to the situation in which the structure of forces have undergone a change between the DPRK and the U.S.

Eric Gomez, senior fellow at the Cato Institute in the U.S., said the U.S. policy toward the DPRK is a total failure, urging the Trump administration to go back to the drawing board to reshape it. He also commented that the "maximum pressure" policy may easily be accepted by Americans at present but it is the one of rare possibility in leading north Korea into a change.

A former policy researcher under the Bush administration, Benette Ramberg, in his commentary said the U.S. and south Korea have to admit the status quo of the nuclear issue of north Korea, stressing that it is a pipedream for one to think of getting north Korea to dismantle its nuclear weapons, and urging the need to explore ways for co-existing with north Korea, a possessor of nukes.

Doug Bandow, senior fellow at the Cato Institute and former special assistant to ex-President Ronald Reagan, in his commentary "North Korean crisis inches close to a boiling point. Now is a time to think over" said:

The U.S. had better reexamine its commitment to "security" in south Korea. In fact, the U.S. is left with no reason to continue to protect south Korea after the end of the Korean War.

The U.S. may opt to stop the presence of its forces and scrap the commitment to "security" in a phased manner.

What is important is that the withdrawal of the U.S. forces may write off the U.S. from the north Korea's list of attack targets.

The easiest way for clearing the U.S. of its concern about north Korea's missiles targeting the U.S. mainland is to get its hands off the Korean peninsula issue.

The U.S. should no longer be inveigled into the nuclear danger on the Korean peninsula.

The director for state security planning of a research institute in Sidney contended that co-existence with north Korea, a possessor of long-range nuclear missiles, is the only way out for Washington at the moment until it swallows bitter pill.

Situation is undergoing a rapid change.

Time has now come for the U.S. to drop its hopeless hostile policy toward the DPRK.

The U.S. had better face up to the trend of history, make a switchover in its DPRK policy and thus fulfill its responsibility in ensuring peace on the Korean peninsula.

This will be beneficial for the U.S., too.