折冲

zhé chōng dào qiān lǐ zhī wài

折冲到千里之外

use stratagem to vanquish the enemy long before they get close

wài jiāo diàn bào zhōng xù shù xǔ duō mù hòu zhé chōng nèi mù

外交电报中，叙述许多幕后折冲内幕。

There's a lot of behind-the-scenes work reported on the diplomatic cables.