There are no special rules that apply to these questions. These are the same rules that apply to all questions, but these are the rules most likely to trip you.
Do not post pictures in questions or answers that are violent or the result of violence, or otherwise upsetting or "not safe for work".
If such images or video are necessary to explain the claim or the supporting evidence they should be behind links with clear warnings to viewers who do not wish to see them. This applies even if the author is claiming the images are fake or misinterpreted.
Do not use questions or answers to promote your political affiliations.
Sorry, but we don't care about your political opinions.
In particular, during conflicts, proponents of violence often attempt to "other" their enemies, painting them as subhuman or otherwise not worthy of empathy and/or basic human rights. Asking about such claims is permitted, but using questions or answers to paint people this way is not acceptable.
Your questions must contain a specific claim that can be empirically answered from available evidence.
In the period immediately after a battle or other attack, there is often very limited confirmed information, and propagandists from each side fill the void with claims supporting their own side, or just muddying the waters so you feel you can't trust either side. That is when the military, journalists, UN observers, and various justice systems go in and attempt to sort out what actually happened, while the rest of the world watches on.
It is tempting to ask questions on Skeptics.SE during this period to get to the bottom of the claims. However, we can't send our own researchers in. All we can do is report what others have found.
For this reason, there is a community-specific close reason:
Questions about unresolved current events and issues currently under investigation by a court of law, government, or other similar investigative body are off-topic because there is insufficient data for a meaningful answer. For more information, see Handling current news questions.
In short, if the BBC, CNN, the NYT and Reuters are all still trying to find an answer of a question in order to report on it, asking the question here isn't going to get you an answer any faster. The question will likely be closed until the journalists can catch up.
Your questions must be notable.
"Notable" here basically means "widely-believed", so find a link to someone (or some people) making the claim, ideally from somewhere widely read. Quote them in your question so we can see your question matches their claim.
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