In this 2014 photo, a US soldier investigates the scene of a suicide attack at the Afghan-Pakistan border crossing in Torkham, Nangarhar province. Endless wars in Afghanistan, Syria and Libya, and ongoing conflict in Iraq, have justified the realists' stance against foreign interventions. AFP
In this 2014 photo, a US soldier investigates the scene of a suicide attack at the Afghan-Pakistan border crossing in Torkham, Nangarhar province. Endless wars in Afghanistan, Syria and Libya, and ongShow more

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