Space:- Russia and China are edging ever closer to unleashing space-based weapons, a decision that could have far-reaching implications for America’s ability to defend itself, U.S. military and intelligence agencies warn.

Adding to the concern, they say, is what appears to be a growing willingness by both countries to set aside long-running suspicions and animosity in order to gain an edge over the United States.

“I would highlight ... the increasing amount in intent to use counterspace capabilities,” said Lieutenant General Jeff Kruse, director of the Defense Intelligence Agency.

“Both Russia and China view the use of space early on, even ahead of conflict, as important capabilities to deter or to compel behaviors,” Kruse told the annual Aspen Security Forum on Wednesday. “We just need to be ready.”

Concerns about the safety of space surged earlier this year when House Intelligence Committee Chairman Mike Turner called for the declassification of “all information” related to what was described as a new Russian anti-satellite capability involving nuclear weapons.

More recently, Turner has warned that the U.S. is “sleepwalking” into a disaster, saying that Russia is on the verge of being able to detonate a nuclear weapon in space, which would impose high costs on the U.S. military and economy.

The White House has responded repeatedly that U.S. officials have been aware of the Russian plans, and that Moscow has not yet deployed a space-based nuclear capability.

It is a stance that Kruse reaffirmed Wednesday, with added caution.

“We have been tracking for almost a decade Russia's intent to design the ability to put a nuclear weapon in space,” he said. “They have progressed down to a point where we think they're getting close.”

The Russians “don't intend to slow down, and until there's repercussions, will not slow down,” he said.

Russian and Chinese officials have yet to respond to VOA’s requests for reaction to the latest U.S. accusations, but both countries have repeatedly denied U.S. criticisms of their space policies.

In May, Russian Deputy Foreign Minister Sergei Ryabkov dismissed U.S. concerns about Moscow trying to put nuclear weapons in space as “fake news.”

But the Chinese Embassy in Washington, while admitting there are some “difficulties” when it comes to China-U.S. relations in space, rejected any suggestion Beijing is acting belligerently in space.

“China always advocates the peaceful use of outer space, opposes weaponizing space or an arms race in space and works actively toward the vision of building a community with a shared future for mankind in space,” spokesperson Liu Pengyu told VOA in an email.

“The U.S. has been weaving a narrative about the so-called threat posed by China in outer space in an attempt to justify its own military buildup to seek space hegemony,” Liu said. “It is just another illustration of how the U.S. clings on to the Cold War mentality and deflects responsibility.”

Despite Beijing’s public posture, the Defense Intelligence Agency’s Kruse suggested Wednesday that China’s rapid expansion into the space domain is just as worrisome.

“They're in multiple orbits that they did not used to be before,” he told the audience in Aspen, Colorado, warning that Beijing has already invested heavily in directed energy weapons, electronic warfare capabilities and anti-satellite technology.

“China is the one country that more so even than the United States has a space doctrine, a space strategy, and they train and exercise the use of space and counterspace capabilities in a way that we just don't see elsewhere,” he said.

The general in charge of U.S. Space Command described the Chinese threat in even starker terms.

“China is building a kill web, if you will, in space,” said General Stephen Whiting, speaking alongside Kruse at the Aspen conference.

“In the last six years, they've tripled the number of intelligence, surveillance and reconnaissance satellites they have on orbit — hundreds and hundreds of satellites, again, purpose built and designed to find, fix, track target and, yes, potentially engage U.S. and allied forces across the Indo-Pacific,” he said.

Whiting also raised concerns about the lack of clear military communication with China about space.

“We want to have a way to talk to them about space safety as they put more satellites on orbit,” he said, “so that we can operate effectively and don't have any miscommunication or unintended actions that cause a misunderstanding.” VOA/SP