The resolution, drafted by the United States and negotiated with the North's closest ally China, drew criticism from Russia for the short time the 13 other council nations had to consider the draft, and last-minute changes to the text. Two of those changes were extending the deadline for North Korean workers to return home from 12 months to 24 months — which Russia said was the minimum needed — and reducing the number of North Koreans being put on the U.N. sanctions blacklist from 19 to 15.