Voting announcement on the veto, moving sirens, Prime Minister's message

Polish fighters operated in airspace due to Russia's attacks on Ukraine. The head of the MFA Radosław Sikorski commented on Elon Muska and Dmitri Medwiedev's posts on the European Union. Marshal of the Sejm Vladimir Czarzasty gave the date of voting on the presidential veto against the alleged chain bill. Here are 5 things worth knowing on Sunday 7 December.