Russia is moving tactical nuclear weapons systems into recently-annexed Crimea while the Obama administration is backing informal talks aimed at cutting U.S. tactical nuclear deployments in Europe.

Three senior House Republican leaders wrote to President Obama two weeks ago warning that Moscow will deploy nuclear missiles and bombers armed with long-range air launched cruise missiles into occupied Ukrainian territory.

"Locating nuclear weapons on the sovereign territory of another state without its permission is a devious and cynical action," states the letter signed by House Armed Services Committee Chairman Howard P. "Buck" McKeon (R., Calif.) and two subcommittee chairmen.

"It further positions Russian nuclear weapons closer to the heart of NATO, and it allows Russia to gain a military benefit from its seizure of Crimea, allowing Russia to profit from its action."

Russian President Vladimir Putin in recent months "has escalated his use of nuclear threats to a level not seen since the Cold War," they wrote.

In a related development, the Obama administration is funding non-official arms control talks with Russia through a Washington think-tank that are aimed at curbing U.S. tactical nuclear arms in Europe.

The first round of talks was held in Vienna Monday and Tuesday.

Critics say Obama administration arms control officials at the State Department and Pentagon are using the informal nuclear talks as groundwork for future tactical nuclear arms cuts.

Such cuts are likely to be opposed by NATO allies, especially in Eastern Europe, worried by growing Russian military threats to the continent.

Regarding the nuclear deployments to Crimea, Senate Armed Services Committee ranking member James Inhofe (R., Okla.) first disclosed last month that Putin had announced in August his approval of deploying nuclear-capable Iskander-M short-range missiles along with Tu-22 nuclear-capable bombers in Crimea, located on the Black Sea.

"The stationing of new nuclear forces on the Crimean peninsula, Ukrainian territory Russia annexed in March, is both a new and menacing threat to the security of Europe and also a clear message from Putin that he intends to continue to violate the territorial integrity of his neighbors," Inhofe stated in a Sept. 8 op-ed in Foreign Policy.

In their Sept. 23 letter to the president, McKeon, Rep. Mike Rogers (R., Ala.), chairman of the subcommittee on strategic forces, and Rep. Michael Turner (R., Ohio), chairman of the subcommittee on tactical air and land forces, noted Russia’s violation of the 1987 Intermediate-range Nuclear Forces Treaty by building a banned cruise missile. The missile has been identified by U.S. officials as the R-500.

The lawmakers said the Russian nuclear deployment in Crimea represents the "clear, and perhaps irrevocable tearing" of the 1997 agreement between NATO and Russia that allowed Russia to maintain a military presence within the alliance.

The Russian nuclear deployment plans and treaty violation should have been discussed during the recent NATO summit in Wales but were not, they said.

As a result, the congressmen urged the president to brief Congress on the threatening Russian nuclear deployments in Crimea. They also called on the president to suspend the NATO-Russia accord and demand the removal of all Russian military personnel from NATO facilities.

Additionally, they asked that the United States and its allies halt all arms control surveillance flights by Russia carried out under the Open Skies Treaty.

Significantly, the three House leaders called on the administration to begin research and development on deployment sites for new U.S. intermediate-range ground-launched cruise and ballistic missiles, if Russian refuses to return to compliance with the INF accord.

Putin "must be made to understand that his actions will accomplish nothing more than the alienation [of] Russia from the West, its economy and its security architecture," the lawmakers said.

"Until we have a strategy that convinces Mr. Putin he cannot achieve his dream of a ‘New Russia’ through illegal annexations, covert invasions, and nuclear saber-rattling, statements and sanctions along cannot be expected to have an effect on his actions," the letter warns.

"Too much is at stake to continue to allow Russia’s dictator to continue to proceed on his current path toward regional destabilization without serous opposition."

The action "further undermines Russian credibility in terms of the Budapest Memorandum that the Russian Federation signed in 1994," the congressmen said.

The memorandum promised Ukraine would have security assurances against threats or use of force in exchange for Kiev giving up its Soviet-era nuclear weapons – at the time the third largest arsenal in the world.

On the Track 2 talks between Russian experts and a group hosted by the Washington-based Center for Strategic and International Studies (CSIS), the program leader was identified as anti-nuclear arms advocate Sharon Squassoni.

Squassoni took part in a study three years ago sponsored by the leftist, anti-nuclear weapons group Ploughshares Fund that called for removing all U.S. tactical nuclear arms from Europe.

Thomas Moore, a former senior professional staff member on the Senate Foreign Relations Committee who quit CSIS over concerns about Squassoni's anti-nuclear slant, said he felt the Track 2 program, which was to cost $215,000 in federal funding, was unwise after Russia’s military takeover of Crimea which began last February.

Moore said in an interview that the administration could be using the CSIS Track 2 talks as a way of conducting direct negotiations to further reduce U.S. nuclear arms in Europe.

"Now is the wrong time to entertain any such ideas with any Russians, whether they are official or unofficial Russians, because they all support Vladimir Putin’s war in Ukraine and violation of the INF treaty," Moore said, noting that verifying any tactical nuclear arms reductions is nearly impossible.

"My goal was to verify and keep our nukes in Europe," he said, noting that Squassoni knows little about nuclear arms and has been "a partisan for Obama and his anti-nuclear agenda in Europe."

CSIS spokesman Andrew Schwartz confirmed that the Track 2 talks involving U.S., Russian and European experts are aimed at "limiting non-strategic nuclear weapons." He declined to identify the U.S. or foreign members of the project and said a report on the program would be published in summer or fall of next year. He said the notion that the project has not been adjusted to account for the Crimea crisis is wrong.

Squassoni confirmed her participation in the Ploughshares study but said in an email that the recommendations of that project were not discussed during the first Track 2 meeting this week.

"I can assure you that my personal views do not interfere with my ability to facilitate balanced, analytically sound dialogues," she said.

The CSIS-Russia Track 2 nuclear talks also are being supported by Rose Gottemoeller, undersecretary of state for arms control and international security; and Andrew Weber, who recently resigned as assistant secretary of defense for nuclear, chemical and biological defenses amid allegations of insubordination and improper personnel activities.

A Pentagon spokeswoman declined to provide details surrounding Weber’s resignation but said he would be taking a lesser position at the State Department.

A U.S. official close to the Pentagon said Weber ran afoul of his superiors as a result of his anti-nuclear arms positions, and practices related to hiring and the use of personnel within his office.

Alexandra Bell, a spokeswoman for Gottemoeller said: "The administration is supportive of the domestic and international non-governmental community’s right to conduct research, scholarship, advocacy and Track 2 dialogues as they see fit."

Both the Pentagon and State Department spokeswomen would not address the question of whether holding informal nuclear talks on cutting nuclear weapons in Europe with the Russians will undermine NATO security in the aftermath of the Crimean crisis.

Former Pentagon official Mark Schneider, a strategic nuclear arms specialist, said the Track 2 and any formal arms talks on tactical nuclear arms would fail.

"They can have as many tracks as they want but the Russians will not agree to limits on tactical nuclear weapons," Schneider said. "Their advantage is too great."

The United States is believed to have around 200 nuclear weapons in Europe. Russia’s tactical nuclear arsenal is at least 2,000.

"NATO politics will prevent any cuts in U.S. tactical nuclear weapons in Europe," he said. "This is obviously about the worst possible time to talk about something like this."

Schneider said nuclear policymakers should focus on deterrence now instead of disarmament.

A Russian Defense Ministry spokesman told state-run Interfax March 26 that a "missile-carrying regiment" of Tu-22 Backfire nuclear bombers will be deployed to the Crimean airbase at Gvardeyskoye within two years.

IHS Jane’s Defence Weekly described the nuclear-capable Tu-22s to be based in Crimea as "the backbone of Soviet naval strike units during the Cold War."

Rogers, the strategic forces subcommittee chairman, said Sept. 18 that the Russians have discussed "plans to station tactical nuclear weapons in Crimea."