Glossary entry (derived from question below)
English term or phrase:
War chest
Persian (Farsi) translation:
ذخیره مالی برای شرایط بحرانی
English term
Iran
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War chest
Proposed translations
Professional English-Persian LSP
Native in: Persian (Farsi) 
Works in: English to Persian (Farsi), Persian (Farsi) to English, Persian (Farsi)
ذخیره مالی برای شرایط بحرانی
https://en.wikipedia.org/wiki/War_chest
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صندوقچه جنگ
Spain
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صندوق ذخیره
Investopedia:
A war chest describes cash reserves set aside for a business to launch a corporate raid or defend against one.
Here it's described as شطرنج جنگ: :)
https://www.bourseiness.com/dictionary/war-chest
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منابع مالی پشتیبان
Iran
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Native in: Persian (Farsi)
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بودجه (و تسلیهات) تخصیصی
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Note added at 8 mins (2018-12-19 11:16:59 GMT)
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https://en.wikipedia.org/wiki/War_chest
A war chest is a metaphor for any collection of tools or money intended to be used in a challenging or dangerous situation.
بودجه و ابزار و وسایلی که عمدتاً برای استفاده در موقعیتی چالش‌برانگیز یا خطرناک لحاظ می‌شود
In the modern era, it more often refers to a collection of funds (or less occasionally special tools or equipment) intended to allow a person or organization to get through a situation that requires much more readiness or money than usual.
جدیداً، به بودجه و ابزارها و تجهیزاتی اطلاق می‌شود که فرد یا سازمان برای گذر از موقعیت یا برهه‌ای دشوار از آن‌ها کمک می‌گیرد؛ برهه یا موقعیتی که اغلب آمادگی یا بودجه‌ی بسیار بیشتر از حد عادی طلب می‌کند
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Note added at 16 mins (2018-12-19 11:25:12 GMT)
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In business a war chest, or cash mountain is a stash of money set aside to deal with unexpected changes in the business environment, or to use when expansion possibilities arise.
با توجه به این معنا، به نظرم از «ذخیره‌ی احتیاطی/اضطراری» هم می‌توانید استفاده کنید
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خزانه جنگی
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