Pakistan and its nuclear-capable neighbor India both routinely carry out tests of various missile. Both countries have agreed to inform each other in advance of such tests.

巴基斯坦和其核邻国印度都经常进行各种导弹试射。两国达成协议在进行这类试射之前通知对方。

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More nuclear-capable countries mean more such possibilities.

ECONOMIST: The ostrich��s view of the world