When I was still in school, we were taught that the european powers were very much disturbed by the french revolution - the ideas of the republic were viewed as dangerous for the current order, and it was one of the reasons for the intervention that eventually occurred.
However, that wasn't the first time a king was deposed and a republic was installed - that already happened in England centuries before. Admittedly, I don't think the changes were as radical, but I still see some similarities.
So it makes me wonder - what did the contemporaries outside of England think of what happened? Did they view it with the same disturbance? Did they care? Do we even know?
Not my area of expertise, but I'm interested in this too, and have seen previous responses to similar questions:
Hopefully someone with expertise will come along and add to.
Despite the fact that both countries had little means to directly affect each other, establishment of the Commonwealth severely impacted Anglo-Russian relations, mostly in negative way. Reaction towards the English Civil War and execution of Charles I at least from Russian side was noticeably hostile. Aside from official condemnation of the revolution, tsar Alexis I imposed severe restrictions on English representatives in Russia. Diplomatic relations have severely worsened, and English ambassadors were deported and denied entrance up until the 1660 Restoration. In addition to that, tsar also proposed to several European monarchs the idea of organizing Holy League (in line with those previously formed against Ottoman Empire) to maintain hostilities against the Commonwealth, but this idea was obviously purely populistic and was dropped almost immediately.
Effectively, English traders were banned from directly conducting business everywhere besides port of Arkhangelsk, and their movement across the country was limited and carefully monitored; something which no other foreigners had to deal with at the time. All the privileges the English have had since the middle of 16th century were revoked. Import of some goods (such as tobacco) from English trade routes was banned completely. These restrictions weren't lifted until late 17th century.
Special committee concerning continuation of the previously established trade relations was noted as saying this in 1697:
Since the time [of reign of Cromwell], Englishmen continue to conduct business in this country in much worse conditions than any other foreigners. They can't visit Moscow without being granted special permission, can't hire Russians in their service, need to pay 5% additional fee from any transaction and have to endure many more grievances.
On direct order of Alexis, biography of king Charles and especially circumstances of his death were translated and published in Russia immediately after the end of the civil war. Even much later, during Peter I's visit, English officials made sure to avoid discussions and showings of items/records concerning English Civil War in order not to "provoke the same reaction his father and entire Russian people had right after execution of king Charles".
English Civil War also had notable indirect impact on Russia in a way of steady stream of English and Scottish mercenaries who were previously fighting against Cromwell. Many Russian commanders in wars with Poland-Lithuania, Sweden, Crimean Khanate and Ottoman Empire in the second half of 17th century were Royalist veterans, and formed sizable portion of foreigners in Russian service.
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