U.S. Secretary of Defense Ash Carter listens during a news conference in Tallinn, Estonia, June 23, 2015.
U.S. Secretary of Defense Ash Carter listens during a news conference in Tallinn, Estonia, June 23, 2015.

U.S. Defense Secretary Ash Carter said Tuesday the U.S. will pre-position about 250 tanks, Bradley infantry fighting vehicles and self-propelled howitzers in eastern and central Europe in a move meant to reassure NATO allies unnerved by threats seen from Russia and terrorist groups.

Carter, during a trip to Tallinn, said the Baltic states – Estonia, Lithuania, Latvia – as well as Bulgaria, Romania and Poland agreed to host elements of the military equipment. Some of the equipment would also be located in Germany.

The amount of equipment that would be stored in each country would be enough to supply either a company, which would be enough for about 150 soldiers, or a battalion, enough for about 750 soldiers.

"We will temporarily stage one armored brigade combat team's vehicles and associated equipment in countries in central and eastern Europe," Carter said at a joint press conference with three Baltic defense ministers.

Without giving specifics on deployment sites, Carter said the pre-positioned equipment would not be "static," but rather intended "to enable richer training and more mobility to forces in Europe.” The U.S. presence, he said, would be “persistent” but “agile.”

In order to help allies develop cyber defense strategies against computer-based attacks, the U.S. is also going to work with NATO's cyber center, located in Estonia, Carter said.

"While we do not seek a cold, let alone a hot war with Russia, we will defend our allies," Carter added.

The equipment, along with the commitment of resources for NATO's high-readiness task force, would be part of a two-pronged U.S. plan meant to underscore America's commitment to helping allies counter the growing threats on Europe's eastern and southern fronts.

Russian reaction

A Russian defense ministry official said stationing tanks and heavy weapons in NATO states on Russia's border would be the most aggressive U.S. act since the Cold War.

President Vladimir Putin announced Russia would add more than 40 intercontinental ballistic missiles to its nuclear arsenal this year.

Carter has condemned Russia's "loose rhetoric" involving nuclear arms.

On Monday, Carter said the United States "will not rely on the Cold War playbook" in dealing with Russia, but instead will rely on a combination of military and non-military tools to counter Russian aggression in Ukraine.

Carter spoke in Berlin Monday before traveling to Estonia for meetings with the defense ministers of Estonia, Latvia and Lithuania, which were forcibly incorporated into the Soviet Union.

He said there is neither a desire for a return to a Cold War nor for a new, active conflict with Russia, and that economic sanctions on Russia are having the desired effect of imposing economic hardship on Moscow.

NATO meeting

Carter will meet with the defense ministers from NATO's 28 member states Wednesday and Thursday in Brussels to discuss plans for dealing with Russia following its annexation of Ukraine's Crimean peninsula and what is widely viewed as direct support for separatists in eastern Ukraine..

Moscow denies providing troops or arms to the rebels.

Estonia, Latvia and Lithuania, which were forcibly incorporated into the former Soviet Union, last month asked NATO to deploy several thousand permanent troops in their region as a deterrent to Russia.

Some European NATO allies, such as Germany, have been skeptical about any substantial permanent deployment, saying it could breach a 1997 agreement between the alliance and Russia.

However, that agreement doesn't appear to rule out temporary NATO troop rotations or pre-positioning alliance equipment along its eastern flank.

Speaking to journalists in Brussels on Tuesday, U.S. ambassador to NATO Douglas Lute explained that Washington would only be deploying heavy equipment, without troops.

Carter said Monday that while the West is not looking to be enemies with Russia, it will defend itself if necessary.

"Ukraine is only one part of our larger concerns these days about Russia. In response, we are taking a strong but balanced strategic approach, an approach that seeks to ensure Russia cannot force anyone to turn towards the past, all the while welcoming and encouraging Russia to turn back towards the future," Carter said.

Speaking to reporters earlier Monday while en route to Berlin, Carter said the challenge posed by Russia today under the leadership of Putin is different from challenge posed by the Soviet Union during the Cold War.

'Hybrid warfare'

The new challenge, he said, includes such elements as "hybrid warfare" – a military strategy that blends conventional warfare, irregular warfare and cyberwarfare.

"It's not like it was in the old days," he said. "We are looking at NATO responses that are much more mobile, much more agile, able to respond on short time lines, because that's how events today unfold, unlike a quarter let alone a half a century ago.

"That's why we're attentive to the hybrid aspects of potential contingencies. ... And then there are new domains like cyber and so forth that certainly were not part of things back in the Cold War," Carter said.

Also Monday, NATO Secretary General Jens Stoltenberg said the alliance will more than double the size of its rapid-response force, from its current 13,000 personnel to 30,000 or 40,000 troops.

Some material for this report came from Reuters, AP and AFP.