Much of the tension has arisen from a longstanding dispute between Pakistan and Afghanistan over the Durand line, the 117-year-old colonial boundary they still contest.

巴基斯坦和阿富汗在杜兰线问题上一直争论不休，双方之间的紧张气氛很大程度上来源于此。杜兰线是个有117年历史的殖民边界，目前仍处于互不相让的状态。

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After all, it was British colonial rulers who, at partition in 1947, drew the boundary line between India and Pakistan that the two nations have battled over ever since.

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