Field of Science

Showing posts with label missile defense. Show all posts
Showing posts with label missile defense. Show all posts

Missile shield to be scrapped

It's a great day. This piece of news makes me feel extremely gratified as I am sure it does many others. Missile defense against ICBMs has been an eternal bug that has bitten almost every President since 1960. The Bush administration had aggressively pushed plans to implement a missile shield in Poland and the Czech Republic. There has always been evidence that the efficacy of such a shield will ultimately be severely limited by the basic laws of physics, and that the adversary can essentially and cheaply overwhelm the defense with decoys and countermeasures.

I have written about these limitations and studies about them several times before (see below). The best article arguing against the European missile shield is a May 2008 article by Theodore Postol and George Lewis in the Bulletin of the Atomic Scientists (free PDF here).

And as arms expert Pavel Podvig succinctly wrote in the Bulletin of the Atomic Scientists only three days back, it's not just about the technology, but it's about a fundamentally flawed concept:
"The fundamental problem with the argument is that missile defense will never live up to its expectations. Let me say that again: Missile defense will never make a shred of difference when it comes to its primary mission--protecting a country from the threat of a nuclear missile attack. That isn't to say that advanced sensors and interceptors someday won't be able to deal with sophisticated missiles and decoys. They probably will. But again, this won't overcome the fundamental challenge of keeping a nation safe against a nuclear threat, because it would take only a small probability of success to make such a threat credible while missile defense would need to offer absolute certainty of protection to truly be effective...It's understandable that people often talk about European missile defense as one of the ways in which to deal with the missile threat posed by Iran. Or that someday missile defense could provide insurance for nuclear disarmament--this is the vision that Ronald Reagan had. When framed in this way, missile defense seems like a promising way out of difficult situations. But this promise is false. If a real confrontation ever comes about (and let's hope it never happens), we quickly would find out that missile defense offers no meaningful protection whatsoever".
Now the Obama administration has decided to scrap the unworkable shield and has decided to replace it with a much more realistic defense against short-range missiles. I cannot imagine how gratified this must make the scores of scientists, engineers and policy officials who have long argued against the feasibility of the shield. It also signals a huge shift in Bush-era foreign policy. Notice how the administration has diplomatically and shrewdly avoided mentioning the basic failures of the earlier system.

Unfortunately, the sordid history of missile defense and the inherent satisfaction that seems to stem by arguing in favor of a "shield" to protect the population makes me skeptical in believing that the concept is dead forever. But for now, there is peace in our time and this is a significant breakthrough.


Past posts on missile defense:
Made For Each Other
Missile Defense: The Eternal Bug
Holes in the Whole Enterprise
Czechs halt missile shield progress

Czechs halt missile shield progress

Finally, some promising development on this front. I have talked about the futility of missile defense several times before. In a nutshell, the only time an ICBM can truly fruitfully be intercepted is in midcourse, when it is descending to earth above the atmosphere. At this point it is being guided only by gravity, and it can release thousands of simple decoys from which it will be essentially indistinguishable for an incoming warhead. Several scientists over the last three decades have written articles arguing this point (read the excellent article in the Bulletin of Atomic Scientists), and yet missile defense stubbornly refuses to leave the minds of US presidents.

Plus, the underpinnings of missile defense totally miss the point and indicate vastly misplaced priorities. What in the name of Wotan is the possibility that N. Korea or Iran would attack the US with ICBMs and risk being reduced to dust? What on the other hand are the chances of someone slipping a small WMD through the incompletely guarded ports in the US? And what are the chances of alienating Russia by erecting such a shield a stone's throw away from Russian territory?

The former administration did not believe in the laws of physics, nor in the laws of human nature. Seems this one does.

Space: The Violent Frontier?

A couple of days ago, the US sent up a missile to blow up a "rogue" satellite. China had also done the same thing a year or so ago. These actions seem like ominous preludes to a possible arms race in space, the last thing the world wants.

In the latest issue of Pragati, Adityanjee has an article that exhorts India to develop its own ASAT (anti-satellite) system in response to these actions by the US and China. While developing such a system might be good insurance and a future bargaining chip, the first and most important thing we all need to do is keeping pushing for an international treaty to ban weapons in space. Not only will a failure to do this lead to a possible new Cold War, but it can also render space inhospitable for peaceful technologies, an event that will be disastrous for countries that currently use satellites for weather forecasting and precipitation for example.

Mike Moore, who is a previous editor of the Bulletin of the Atomic Scientists, has written a new book on the history and current status of attempts by the US to weaponise and militarise space. As in many other cases, the US- no friend of treaties for quite some time now- is unique in having vetoed and blocked attempts to forge international treaties to ban weapons in space. This is probably not too surprising considering the attempts by the US since the 19060s (when they were developing a purported system to oust Chinese ballistic missiles) to the 1980s (age of the infamous Star Wars) to the 2000s (the Bush administration's obsession with National Missile Defense). True to other traditions, the US has constantly underscored its sovereign right to exceptionalism when the rest of the world thinks otherwise. The US satellite blowup comes close on the heels of renewed efforts of China and Russia to push for an international treaty to ban space weapons.

In his book, Moore documents how President Eisenhower made spirited efforts to stop an arms race in space. However, every administration since the Reagan administration has vetoed attempts by other space-faring countries to negotiate such treaties. The Pentagon's love affair with GPS-guided precision weapons in the 90s fueled ambitions to weaponise space. Again, it's the US that is leading the world into a dangerous era and is interested in unilaterally pursuing belligerent aims. It seems to be still living in Cold War mode. As Moore says, China and Russia (and presumably India) have many more important problems to tackle and spend money on than building a space weapons capability. However, they can, and will, build this capability if they see the US constantly trying to do so.

The US in fact has a golden opportunity right now to preserve its superiority in weapons technology. The situation reminds me of the early days of the nuclear arms race, when an exceptional opportunity to preserve the US superiority over Russia in nuclear arms was lost because of politicking by right wing hawks and threat inflation specialists. After that, Russia soon caught up and it was too late. Similarly, now is the time for the US to talk to other nations and sign a space-weapons ban, thus preserving and possibly sealing its current technological advantage.

One of the central points of missile defense that I have often made in other posts, is that it is almost assuredly going to fail against ballistic missiles, a point which should have been emphasized in the Pragati article. This points needs to be constantly emphasized because like some annoying virus, it keeps infecting and enamoring the minds of US and world officials in every successive administration, in spite of its proven lack of feasibility. Shooting down ballistic missiles realistically has always been a pipe dream harboured by zealous government officials, and the fallibility of this has been demonstrated time and time again by distinguished scientists and other officials. Any attempt to build an anti-ballistic missile system is a huge waste of money, time and talent, and as an added insidious side-effect, it breeds hostility in other nations, something that has already happened because of the US National Missile Defense system. Missile defense should rankle the hearts of democracy and peace-lovers, libertarians and economic conservatives.

Shooting down satellites is another matter, and unfortunately easier than shooting down ballistic missiles. But as Moore points out in his book, one of the many effects of such an exchange will be an amplification of debris in low-earth orbit, debris that will likely make it impossible to use satellites for peaceful purposes, including missions to other planets in the solar system. And of course, it will add perhaps irreversibly to the hubris-laden image that the US has in the world right now.

Every attempt should be made by all space-faring countries to push for an international treaty banning any kind of weapons in space. But sadly, it's the US again that is posing the biggest impediment to the forging of such a consensus. The next President should make it a priority to sign such a treaty, and Obama has indicated that he might be interested. Any attempt by the US to develop a space weapons capability will lead to a dangerous arms race with Russia, China, India and others, involving huge expenditures and wasted efforts. It will contribute to an already deeply dividing feeling of international resentment and animosity. But perhaps most importantly, it will send out a signal that space, that ultimate refuge that is supposed to be the equal sovereign right of every human being on the planet, can be belligerently conquered and manipulated by a few nations. After that, everything will be up for grabs.