The New York Times quoted Washington-based executive director Daryl Kimball of the Arms Control Association as saying: "There is no only-sanctions strategy that will bring the North Koreans to heel".
The measures were approved unanimously Monday. It's possible that economic disruption could produce a change in their behavior.
Instead, annual crude oil supplies are capped at current levels - China is believed to supply around four million barrels a year through a pipeline, while deliveries of refined oil products such as gasoline and diesel are limited to two million barrels a year. Nearly 80 percent went to China. "We are done trying to prod the regime to do the right thing", said US Ambassador to the UN Nikki Haley.
"Any sanctions you impose on a country like North Korea, the first people to suffer will be the people - it's a trickle-up kind of scenario", said Roh.
Peru does not have any diplomats in North Korea.
"This has been getting quite a bit of play over the last few days, so [the administration] need [s] to be seen as taking strong steps to defend South Korea in the absence of a nuclear option", Stangarone continued. Russia reportedly uses considerable North Korean labour.
"That's a problem between us and the United States", Kim said.
However, she also clarified that the US wants a peaceful resolution to this conflict and doesn't want to go to war with Pyongyang, which is quite a contrast from her earlier stand when she had said the North Korea was "begging for war".
"This resolution also puts an end to the regime making money from the 93,000 North Korean citizens it sends overseas to work and heavily taxes", Haley said. They talk about them as being a plan for decapitation and the invasion and occupation of the north. They are extremely menacing, and the other side never knows when those maneuvers are going on so close to their borders whether they are maneuvers or in fact the real thing.
The new measures are sure to cause North Korea more economic pain. China, Sri Lanka and India also imported some minerals in violation of sanctions.
But what Washington failed to get was equally telling.
Given the faster-than-expected progress in North Korea's development of nuclear weapons and ballistic missiles, members of Congress and experts on North Korea have called for applying maximum pressure on Pyongyang without waiting for approval or cooperation from China and Russia - two countries that blocked the U.S. bid to include an oil embargo on Pyongyang in the latest U.N. sanctions.
South Korea is forming a hit squad to take out North Korean leader Kim Jong Un.