The lyrics displayed below Adrienne Cooper & Zalmen Mlotek rendition on YouTube are:

Будь мой голос громче,
Будь и я сам сильнее,
Я бы бегал по улицам,
Я бы кричал: мир!
Мир, мир, мир!

Here are Deepl translations of both Russian lyrics:

If I had strength in my body,
I would have a louder voice,
I would run through the world
Shouting peace, peace, peace!

If my voice were louder,
If I were stronger myself,
I would run through the streets,
I'd be shouting peace!
Peace, peace, peace!

Here is the Yiddish version in Hebrew characters...

וואָלט איך געהאַט כּוח (קאָפּער)

װען איך װאָלט געהאַט כּוח
װאָלט איך געלאָפֿן אין די גאַסן
,װאָלט און געשריגן: שלום
שלום, שלום, שלום

... and here is the Hebrew version:

לו היה לי כוח
הײתי רצה ברחוב
הײתי צועקת שלום
שלום, שלום, שלום

Transliteration
Lu haya li koach,
Hayiti ratsa barechov,
Hayiti tsoeket shalom,
Shalom, Shalom, Shalom

You'll also find these two last versions on this Mudcat post.