NATO ministers meeting in Estonia on Thursday will debate the future of battlefield nuclear weapons and relations with Russia after Washington and Moscow agreed a major arms reduction treaty this month.

The U.S.-Russian deal would cut the number of deployed long-range, “strategic” nuclear warheads by about 30 percent and is part of a broader effort by the administration of President Barack Obama to boost ties with America’s former Cold War foe.

Attention now turns at a NATO foreign ministers’ meeting in Tallinn to the estimated 200 operational battlefield, or “tactical,” nuclear bombs stationed with U.S. and allied air forces in Germany, Belgium, the Netherlands, Italy and Turkey.

Germany’s ruling coalition, which is also keen to boost ties with Moscow, committed in November to withdrawal of U.S. nuclear weapons from German territory, and in February, Germany, the Netherlands, Norway, Belgium and Luxembourg called for a debate about their future in Europe.

While the U.S. administration wants in future to address the issue of battlefield nuclear weapons, which many analysts consider obsolete in the post-Cold War world, it has yet to state publicly its position. It has, however, stressed that any decision must be agreed by all 28 NATO states.

A senior U.S. official who flew to Tallinn with Clinton said she would lay out the U.S. stance over dinner with NATO foreign ministers on Thursday but declined to tip her hand.

“The secretary will spell out some of the principles that guide us as we think about this issue but I will let her address this with the allies first,” the official, who spoke on condition that he not be identified, told reporters.

Russia, meanwhile, says it will not start destroying its massive superiority in the weapons until Washington removes its bombs from Europe, a prospect worrying to former Soviet bloc states that are now part of NATO.

Another key concern is that any move to remove NATO nuclear weapons could prompt Turkey to develop its own deterrent, given its worries about nuclear proliferation in the Middle East.

NATO STRESSES COMMON APPROACH

NATO aims to set out its nuclear stance in a new strategic vision due to be approved at a summit in Lisbon in November and stresses the need for a common approach.

“No decision will be taken in Tallinn,” NATO Secretary-General Anders Fogh Rasmussen said on Monday.

“But I do think the principles of NATO’s nuclear discussion are already clear: first that no ally will take unilateral decisions and second that as long as there are nuclear weapons in the world, NATO will need a nuclear deterrent.”

A Belgian foreign ministry spokesman said it was important to debate reducing or withdrawing tactical nuclear weapons.

“But there must be a decision by consensus within NATO. We don’t know whether that is in reach,” Patrick Deboeck said.

“We think it is important to maintain the credibility of nuclear deterrence, but we also see the possibility to go further,” on nuclear disarmament, he said. “NATO has a role to play on tactical nuclear weapons.”

Deboeck said the key point was whether such weapons should be withdrawn without Russian moves to destroy its arsenal, which is estimated at 5,400 weapons, 2,000 of which are deployable.

Tomas Valasek of the Centre for European Reform think tank said tactical nuclear weapons had little military rationale, especially as their readiness had been so reduced they would take months to deploy.

But for ex-Soviet bloc states nervous about Russia, they were a symbol of U.S. commitment to collective defence.

“I suspect the days of tactical nuclear weapons in Europe are over, barring a catastrophic meltdown in relations with Russia. It’s just a matter of when and how,” he said.

(Additional reporting by Arshad Mohammed; Editing by Michael Roddy)