I just stumbled upon this article, where it talks about a recent law change:
Norway banned Russian citizens or companies from flying drones or other aircraft in the country on 28 February
I can easily imagine that, while vacationing in Norway, I could hand off the remote control for a small DJI drone to my wife (who is a Russian citizen) unaware that this would be against the law.
Similarly, I discovered one month ago (while using an ATM in an European airport, which was displaying a notice) about EU regulation No 833/2014, Article 5 i (amendment of 15th March 2022)
It shall be prohibited to sell, supply, transfer or export banknotes denominated in any official currency of a Member State to Russia or to any natural or legal person, entity or body in Russia, including the government and the Central Bank of Russia, or for use in Russia.
- The prohibition in paragraph 1 shall not apply to the sale, supply, transfer or export of banknotes denominated in any official currency of a Member State provided that such sale, supply, transfer or export is necessary for:
(a) the personal use of natural persons travelling to Russia or members of their immediate families travelling with them
Similarly, when I travelled to Russia recently (after 15th March, but before I discovered the above regulation) to meet my in-laws, I of course brought a little bit of cash with me. It was not the currency of an EU member state, and even if it was it would've been permitted for personal use...
but I feel uncomfortable having inadvertently brushed so close to the boundary between what's permitted and what's outlawed.
With the flurry of new regulations introduced since the Russian invasion, I suspect that there might be a lot more that I'm not aware of. The concerns of (new) laws that affect us personally without us knowing about them it's a generic one, and I know that "Ignorance of the Law is No Excuse".
Usually the concern is about new emergency regulations which affect large swaths of the population, but here I think that the issue is for laws (or interpretation thereof) that affects some obscure circumstances. Due to the relatively small population of Russian citizens in the European Union (EU), and due to the extremely small amount of travellers visiting Russia from the EU, I understand that regulations that affects only those in these circumstances are not be advertised as much as for other laws, but this does not answer the question... how to mitigate risks in accidentally breaching recently introduced new regulations? How to be aware of all of them?
I'm interested in answers relevant for any place in the world, but especially EU/EEA and neighboring countries (UK, Switzerland, etc.)