GENEVA (Reuters) Pakistan has quietly informed world powers that it cannot accept the start of global negotiations to halt production of nuclear bomb-making fissile material in the near future, diplomats told Reuters on Friday. The move represents a potential setback for efforts by both the Obama administration and UN to forge ahead with what is widely seen as the next step in multilateral nuclear disarmament. Zamir Akram, Pakistans Ambassador to the UN in Geneva, disclosed Islamabads position during a diplomatic lunch hosted by Chinese Ambassador Wang Qun earlier this week, they said. We are not in a position to accept the beginning of negotiations on a cut-off treaty in the foreseeable future, Akram was quoted as saying. The UN-sponsored Conference on Disarmament (CD) is trying to launch negotiations to halt production of fissile material (highly-enriched uranium and plutonium) and clinch what is known in the jargon as a fissile material cut-off treaty or FMCT. The question was posed to him quite directly, said another envoy at the lunch, attended by more than a dozen senior diplomats from the 65-member Geneva forum, whose members include Israel, North Korea and Iran. There continues to be no indication they are ready to move forward with the negotiation, the diplomat told Reuters. They feel that the strategic imbalance can only be addressed by further (fissile) production. Theyve made that pretty clear. Akram told Reuters on Friday: We have a position. I will articulate that position when the right time arrives. What I said was qualified by certain conditions, Akram added. There are basic conditions about the nature of the discussions, whether it will be simply a cut-off treaty or take account of the issue of stocks. Stockpiles of fissile material already held by the five official nuclear powers (Britain, China, France, Russia and the United States) and others will be germaine to the nature of the treaty that emerges, according to Pakistans envoy. Will it be a simple ban, will it be a simple non-proliferation measure, or can it be a reduction of stockpiles which would mean a disarmament issue? Akram said. Our view is that all critical issues should be on the table first and we should have an understanding of what we will talk about, he said. If it is not in our national security interest then of course we cant be part of this process. Clearly they have very strong concerns, a diplomat said, referring to the fissile issue. This is a very fundamental and sensitive issue back in Pakistan. Pakistan blocked adoption of the conferences agenda for 2010 on Tuesday, calling for the inclusion of additional items, after holding up negotiations last year because of national security concerns about the focus of the talks. Pakistan is also suspicious of closer ties between the United States and India, particularly a civil nuclear deal that Washington signed with Delhi in 2008, ending the nuclear isolation imposed on India after it tested an atom bomb in 1974. It wants to exclude India from plans to stabilise Afghanistan.