The US State Department says the pressure campaign aimed at cutting North Korea's foreign funds will take time to impact the country's nuclear policy.
State Department Spokesperson Heather Nauert's comments demonstrate a sharp difference in tone to that of the US President.
Donald Trump says his earlier comments warning the North of "fire and fury" were not strong enough.
Nauert says the new UN Security Council sanctions will not have an immediate impact.
IN: This pressure...
OUT: ...some time.
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