Russia has accused the United States of stoking military tensions by testing a ground-launched cruise missile, but said it would not be drawn into an arms race, TASS news agency reports.
The Pentagon said on Monday it had tested a conventionally-configured cruise missile that hit its target after more than 500km of flight, its first such operation since the demise of a landmark Cold War-era nuclear pact this month.
The US formally withdrew from the Intermediate-Range Nuclear Forces Treaty (INF) with Russia on August 2 after accusing Moscow of violating the pact, a charge dismissed by the Kremlin.
The US missile test would have been prohibited under the treaty.
"All this elicits regret, the United States has obviously taken the course of escalating military tensions. We will not succumb to provocations," Russian Deputy Foreign Minister Sergei Ryabkov was quoted as saying.
"We won't allow ourselves to be pulled into a costly arms race," he added.
The INF banned land-based missiles with a range of between 500 and 5500 km, reducing the ability of both countries to launch a nuclear strike at short notice.
Ryabkov said that despite the test, Russia did not plan to deploy any new missiles unless the United States did so first.
Australian Associated Press
