hi. I was wondering if this is a good concrete detail.

After the fall of the Soviet Union, the leaders of 11 of the 15 constituent republics of the Soviet Union met in Alma-Ata, Kazakhstan, and signed the Charter of the Commonwealth of Independent States, thus de facto ratifying the initial CIS Treaty.

is there any other way to rewrite this sentence?

thanks in advance!

Yes, there are many ways to rewrite this sentence....including making it into two sentences.

The CIS Treaty was de facto ratified after the collapse of the Soviet Union when.....

Yes, it is concrete detail presented.

Yes, there are multiple ways to rewrite the given sentence to convey the same information. Here are a few possible alternatives:

1. Following the disintegration of the Soviet Union, the leaders of 11 out of the 15 constituent republics convened in Alma-Ata, Kazakhstan, where they signed the Charter of the Commonwealth of Independent States, effectively validating the initial CIS Treaty.

2. In the aftermath of the Soviet Union's dissolution, the Charter of the Commonwealth of Independent States was signed by the leaders of 11 constituent republics during a meeting held in Alma-Ata, Kazakhstan, thereby de facto ratifying the original CIS Treaty.

3. The fall of the Soviet Union led to a meeting of leaders from 11 constituent republics in Alma-Ata, Kazakhstan, where they officially endorsed and ratified the initial CIS Treaty by signing the Charter of the Commonwealth of Independent States.

4. After the collapse of the Soviet Union, the Charter of the Commonwealth of Independent States was signed by leaders representing 11 out of the 15 constituent republics, gathered in Alma-Ata, Kazakhstan, thus de facto ratifying the CIS Treaty.

These are just a few examples of how the sentence can be rewritten while preserving the concrete details. Each revision offers a slightly different wording while conveying the same essential information.