It is prepared to move further if tactical nuclear weapons are discussed, and if the other side acts likewise.
Meanwhile, the issue was raised at a meeting of diplomats at NATO headquarters in Brussels, with Italy demanding that a moratorium on such weapons be discussed when senior NATO officials meet on Wednesday.
Defence cooperation between NATO and Ukraine was reviewed and the possible launching of a Partnership for Peace Trust Fund to help Ukraine destroy the surplus munitions, small arms and light weapons was discussed.
UN discusses Syria weapons resolution Jump to media player A draft resolution on ridding Syria of chemical weapons has been discussed by the UN Security Council.
Bringing in more troops and weapons is being discussed as diplomatic efforts fail to win access for United Nations inspectors seeking to identify and destroy Iraq's weapons of mass destruction.
For decades, nonlethal, or humane, weapons have been discussed, developed, disavowed, seldom used and often ridiculed as oxymoronic.
Though Obama administration officials have said that the problem of Syria's chemical weapons has been discussed with the Russians for more than a year, the two sides have not talked about it in detail.
He insisted – as the US administration has done all week – that the idea of destroying chemical weapons had been discussed for some months, adding: "I'm pleased that President Putin took initiative, and Sergei took initiative, and President Obama responded, and we're here".
"These weapons that are discussed have been in development a very long time," she said, without addressing any of Putin's specific claims of new capabilities.
It featured a conversation in which weapons and tactics were discussed for a "hit" on Mr McCrory.
