國防開支

Leader_A US army that is leaner but stronger

It is never easy to slim the Pentagon behemoth. In times of emergency, such as after the 9/11 attacks, US defence spending tends to balloon rapidly. In times of relative calm, previous gains are rarely clawed back. Chuck Hagel, the Pentagon chief, this week broke with the trend, outlining a vision for a leaner US defence posture. It is a vision to be applauded.

The defence secretary’s budget unveiled a reduction in US forces to just 440,000 – its lowest since before Pearl Harbor. From now on, the US would be equipped to fight just one conventional war rather than two simultaneously. Yet it would extend its technological edge and remain more powerful than the combined capability of the next few powers in the world rankings. Mr Hagel’s vision makes sense as far as it goes. However, sketching it out was the easy part. Now he must persuade Congress to put it into effect.

The case for a smaller US army is strong. After the wars in Afghanistan and Iraq, the American public has little appetite for prolonged foreign occupations. Results on the ground offer little evidence that they have been worth the expense in lives and money. This week President Barack Obama told Hamid Karzai that the US would consider withdrawing altogether from Afghanistan by the end of this year unless Kabul agreed to a treaty putting the US presence on a legal footing. Such an agreement looks remote. After the deaths of 2,313 US personnel and more than $1tn in expenditure, this is a terrible return on investment.

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