The fourth round of U.S.-Soviet arms talks ended today after six weeks of negotiations. The chief Soviet envoy said the United States was uncooperative, and the top U.S. delegate blamed the Soviets for slow progress.
"We introduced a lot of proposals here . . . and we regret that there was no positive response by the American side," Viktor P. Karpov said.
"We still hope for a cooperative spirit but we regretfully don't have it," he said. "We hope that maybe next time there will be more progress."
The fifth round of talks is scheduled to start May 8.
In an unusual public criticism of his negotiating partners, the head of the U.S. delegation, Max Kampelman, said the reason for slow progress was "that the Soviet delegation has not acted to fulfill the commitments undertaken by" President Reagan and Soviet leader Mikhail S. Gorbachev at their November summit in Geneva.