Poland says it shot down drone-like objects which violated its airspace during a Russian attack on Ukraine
This marks the first time a member of the Nato military alliance has directly engaged Russian assets in its airspace since the Ukraine war started in 2022
Poland's president will soon be chairing a National Security briefing with key officials
The Polish PM says the operation is "ongoing" and he is in contact with the Nato chief; he will also be conducting an extraordinary cabinet meeting in an hour
The Polish military says the incident is an "unprecedented violation of Polish airspace", an "act of aggression that posed a real threat to the safety of our citizens"
Citizens in three regions along the border with Ukraine, including Mazowieckie where the capital Warsaw is located, have been urged to stay home and shelter
Operations at four airports have also paused, with the country's major air hub Chopin airport in Warsaw saying that airspace over the country has been shut
The one who's hard to understand is you, with your complete lack of punctuation. "/s" is extremely common and pretty much everybody understands what it means. If you didn't know until now, no biggie, now you do and all is well.
And to answer your question, if a comment or a paragraph ends with an "/s", then you can be sure the author was being sarcastic in that comment/paragraph.
If there's no indicator, it could still be sarcastic or it could be serious, use your own judgement.