war chest

broadly

Japanese Meaning

戦争資金 / 特定の目的（例：政治活動）のための資金

The government quietly bolstered its war chest in anticipation of rising tensions.

政府は緊張の高まりに備えて、戦争資金をひそかに増強した。

Sense（1）

A fund to finance a war

[…]the holdings of the state (the war chest plus other cash balances)[…]

Sense（2）

(by extension) A fund for some special purpose, such as a political campaign

war chests

（ plural ）