The Afghanistan war, the longest overseas conflict in American history, has cost the US taxpayer nearly $1tn and will require spending several hundred billion dollars more after it officially ends this month, according to Financial Times calculations and independent researchers.
Around 80 per cent of that spending on the Afghanistan conflict has taken place during the presidency of Barack Obama, who sharply increased the US military presence in the country after taking office in 2009.
The enormous bill for the 13-year conflict, which has never been detailed by the government, will add to the pervasive skepticism about the war in the US, where opinion polls show a majority of Americans believe it was a bad idea.
With the Iraq war having already cost the US $1.7tn, according to one study, the bill from the Afghanistan conflict is an important factor in the broader reluctance among the American public and the Obama administration to intervene militarily in other parts of the world — including sending troops back to Iraq.
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