Earlier this month, the so-called EU Three--Britain, France and Germany-- achieved an important victory for global security, convincing Iran to suspend its uranium enrichment and plutonium reprocessing activities pending further negotiation on its nuclear question. Though Iran claims that it does not desire a nuclear bomb, the West has long been skeptical of the oil-rich state's contention that it seeks a nuclear fuel cycle for energy purposes alone. Europe and the United States (and of course Israel) will sleep better knowing that Tehran is not pursuing enrichment activities, whatever their alleged purpose.

But the EU3 agreement, which fails to discuss consequences for Iran if it breaks the deal, is vulnerable to being undermined not only by Iran but also by the United States; both have already raised eyebrows in the wake of the accord. Iran raced to produce uranium hexafluoride, a gas that can be enriched into bomb fuel, before it began to observe the temporary suspension on Monday. And both President George W. Bush and outgoing Secretary of State Colin Powell have publicly aired their suspicions that Iran will continue its drive for nuclear weapons under cover of the deal.

At the moment, administration hawks are pressing to confront the mullahs at the United Nations Security Council, where economic sanctions could be considered; calls for using force and for regime change are likely to follow.

Military action is inadvisable at this point, because of a dearth of solid intelligence and the secretive, geographically diffuse nature of Iran's nuclear sites. If the issue reaches the Security Council with the United States and Europe continuing along divergent paths, the inevitable deadlock will deal a severe and lasting blow to international security. Therefore, the agreement must be fortified to keep the Iranians honest, the Europeans effectively engaged and the U.S. hawks bridled.

This can be achieved through a U.S.-European accord laying out trigger mechanisms for specified consequences if Iran violates certain benchmarks. For example, if Iran fails to allow inspectors the access accorded by the Nuclear Nonproliferation Treaty's additional protocol--which Iran is provisionally observing pending ratification--or resumes enrichment and centrifuge-building activities, it could face severe economic sanctions, censure by the Security Council (necessitating cooperation from Russia and China), or in the event of hostility, a forceful response.

We don't know yet whether Tehran will play by the rules. The regime has mastered the art of behaving badly and then seeking rewards for getting back into line. To date, the Europeans have played into its hands, offering carrots for compliance without wielding sticks to punish violations.

Therefore, the Bush administration's apparent comfort with a military option can serve as an important deterrent against Iranian cheating, arming the EU3 agreement with teeth that it would not otherwise have. Iran desires economic incentives but does not yet desperately need them; without a credible threat of U.S.-backed sanctions imposed by the international community, the mullahs can simply decide one day that the restrictions have ceased to be worth their while, and break any deal as though it were merely a business contract.

For the United States, accepting the EU3's carrot-based approach (provided the benchmarks are added) will show the world that it still supports negotiated diplomacy and multilateralism, even in cases where military threats loom. Participating in this framework will also send a message to Iran that the United States is not ruling out renewed relations. This would resonate with the largely pro-American Iranian populace, who despise their regime and are seeking inroads to break free of it.

But if the United States instead presents itself as a unilateralist maverick, it will hinder its own interests; the only thing Iranians disdain more than the mullahs is outside meddling with their deeply nationalistic desire for self-determination. The more overtly hostile the United States acts toward Iran, the more the mullahs are able to spin America's posture to alienate Iranians against the "Great Satan."

The way to keep the Iranian regime in check while speeding its demise is to insure the nuclear agreement through benchmarks and triggers, and then give the mullahs exactly what they ask for in terms of increased access to international institutions like the World Trade Organization.

Such carrots can also be Trojan Horses, allowing the forces of democratic reform within Iran to blossom by enabling pro-democracy elements to make global connections. The U.S. and Europe should saddle up those horses together.

On Wednesday, Oct. 27 PESD researcher Joshua C. House gave a presentation on the status of climate change policy in the US to the Directorate General of the Environment at the European Commission.

Are federal fiscal deficits accelerating deindustrialisation in the United States? For four decades, employment in U.S. manufacturing as a share of the labour force has fallen further and faster than in other industrial countries. In the mid-1960s, manufacturing output was 27 per cent of gross national product and manufacturing's share of employment was 24 percent. By 2003, these numbers had fallen to about 13.8 percent and 10.5 percent respectively. Employment in manufacturing remains weak, with an absolute decline of 18,000 jobs in September shown in the Labor Department's payroll survey.

At the same time, the orgy of tax-cutting, with big revenue losses, continues unabated. On October 6, House and Senate negotiators approved an expansive tax bill that showers businesses and farmers with about $145bn in rate cuts and new loopholes -- on top of what were already unprecedented fiscal deficits. These are principally financed by foreign central banks, which hold more than half the outstanding stock of US Treasury bonds. Moreover, meagre saving by American households is forcing US companies also to borrow heavily abroad.

The upshot is a current account deficit of more than $600 billion a year. America's cumulative net foreign indebtedness is about 30 percent of gross domestic product and rising fast. How will this affect manufacturing? The transfer of foreign savings to the US is embodied more in goods than in services. Outsourcing to India aside, most services are not so easily traded internationally. Thus when U.S. spending rises above output (income), the net absorption of foreign goods -- largely raw materials and manufactures -- increases. True, in this year and last the high price of oil has also boosted the current account deficit. However, since the early 1980s, the trade deficit in manufactures alone has been about as big as the current account deficit -- that is, as big as America's saving shortfall (for more detail, see http://siepr.stanford.edu).

If U.S. households' and companies' spending on manufactures is more or less independent of whether the goods are produced at home or abroad, domestic production shrinks by the amount of the trade deficit in manufactures. The consequent job loss depends on labor productivity in manufacturing, which rises strongly through time. If the trade deficit in manufactures is added back to domestic production to get "adjusted manufactured output", and labor productivity (output per person) in manufacturing stays constant, we get projected manufacturing employment. In 2003, actual manufacturing employment was just 10.5 percent of the US labor force, but it would have been 13.9 percent without a trade deficit in manufactures: the difference is 4.7m lost jobs.

In the 1980s, employment in manufacturing began to shrink substantially because of the then large current account deficit attributed to the then large fiscal deficit: Ronald Reagan's infamous twin deficits. With fiscal consolidation under Bill Clinton, the savings gap narrowed but was not closed because personal saving weakened. Now under George W. Bush, the fiscal deficit has exploded while private saving is still weak. The result is heavy borrowing from foreigners and all-time highs in the current account deficit. The main component remains the trade deficit in manufactures, intensifying the shrinkage in manufacturing jobs.

Is there cause for concern? Note that I do not suggest that the trend in overall employment has decreased, but only that its composition has tilted away from tradable goods -- largely manufactures. In the long run, growth in service employment will largely offset the decline in manufacturing. However, the rate of technical change in manufacturing is higher than in other sectors. It is hard to imagine the US sustaining its technological leadership with no manufacturing sector at all.

More uncomfortably, more Congressmen, pundits and voters feel justified in claiming that foreigners use unfair trade practices to steal U.S. jobs, particularly in manufacturing, and hence in urging protectionism. The irony is that, if imports were somehow greatly reduced, this would prevent the transfer of foreign saving to the United States and lead to a credit crunch, with a possibly even greater loss of US jobs.

The answer is not tariffs, exchange rate changes or subsidies to manufacturing that further increase the fiscal deficit. The proper way of reducing protectionist pressure and relieving anxiety about U.S. manufacturing is for the government to consolidate its finances and move deliberately towards running surpluses -- in short, to eliminate the U.S. economy's saving deficiency.