The Soviet ruble was called Som in Kazakh, Kyrgyz and Uzbek which are written on the back of the notes.

苏联的卢布被称作索姆，用哈萨克语，吉尔吉斯语和乌兹·别克语写在货币的背面。

youdao

The ruble or rouble (currency code RUB) is the currency of the Russian Federation and Belarus (and formerly, of the Soviet Union and the Russian Empire).

卢布（货币代码RUB）是俄罗斯联邦和白俄罗斯（以前是苏联和俄罗斯帝国）使用的货币。

youdao

That is precisely what would be involved in an internationally syndicated fund to backstop ruble convertibility or to meet balance of payments requirements such as providing a cushion for increased Soviet unemployment and a food-import scheme.

CENTERFORSECURITYPOLICY: Center for Security Policy | The Soviet Union In Crisis: Us Interests And Responsibilities