The west has responded to the invasion of Ukraine by imposing economic sanctions on Russia. There has been plenty of discussion about whether economic sanctions are an appropriate response,

what they hope to achieve and what the results will be – not only for Russia but for the world. Economic sanctions have been used as a tool of war for centuries. In 17th- and 18th-century

Europe, when warfare was widespread, economic sanctions were frequently implemented. They included prohibitions on trade, the closure of ports against belligerent enemies, and bans on trade

in certain commodities. Economic exchange was affected in more indirect ways, too, by increased privateering and piracy at sea, high taxes, and conscription. The economic consequences of war

the Spanish Succession (1702-13), both sides imposed economic sanctions on the other. England entered the Nine Years’ War by declaring war on France on May 17, 1689, in response to

Europe-wide concerns that France – and its absolutist monarch Louis XIV – was growing too strong. In its declaration of war, parliament authorised officials to “arrest all ships and vessels

conveying any goods or merchandise in them belonging to the French King or to his subjects and inhabitants”. When Scotland followed suit on August 6, the declaration of war forbade any

Scottish subjects “to trade or correspond … with the said French king or any of his subjects”. France and Britain again found themselves on opposing sides during the War of the Spanish

Succession, a conflict fought over the disputed succession to Spain’s vacant throne and control over that country’s vast global territories. Similar economic sanctions were imposed. In

January 1701, the Scottish parliament embargoed “the importation of all French wines, Brandy and other strong waters and vinegar made in France from any place”. The potential for broader

ramifications are clear – not only would this harm France, but economic consequences would be felt by any nation doing business in French produce. There were social consequences, too, for

anyone who enjoyed drinking French wine. This resonates with current fears over the price of oil. As prices soar as a direct result of the Ukraine conflict and global bans on Russian oil

imports, it is feared that prices of crude oil could rise as high as US$300 (£228) a barrel. Just like in 1701, this economic sanction does not only harm the nation against whom it is aimed,

but has consequences across the globe. TURNING A BLIND EYE But these early-modern sanctions met with mixed success. Individual merchants used a variety of tactics to circumvent them,

including sailing in neutral ships or carrying falsified documents, as well as entering goods through different ports. In addition, governments on both sides of the channel were complicit in

permitting activities that undermined economic sanctions. In 1692, three years into the Nine Years’ War, the Scottish privy council issued six passes for ships to travel to Bordeaux on a

commercial venture. Again, in May 1693, Scots were allowed to trade with and travel to France with “express leave” of the monarch or privy council of Scotland. French admirals, too, ignored

their own sanctions, granting passes for British ships to trade in La Rochelle and Bordeaux throughout the Nine Years’ War. Similar patterns emerged during the War of the Spanish Succession.

The British monarch, Queen Anne, earned herself a reputation for granting passes that allowed trade with France to continue despite wartime embargoes. And in 1702 the English treasury

reported that French wine was being brought over from the Spanish port of St Sebastian: “It was taken there from Bordeaux, a Spanish name given to it, and reshipped in Spanish casks”. There

was also widespread bribery of port officials. In 1703, the English treasury noted that: > This management seemed to be carried on in concert between the > consuls in foreign parts and

 some officers in the Customs … who > for private gratuities undertook for and passed such wines as were > of the growth of Spain. In 1704, in England, the House of Lords undertook an

enquiry that found that 15 ships in Bordeaux, mostly from the West Country, had loaded French brandies and wines. The resulting report stated that the government discouraged informers and

was inclined to hush the matter up rather than pursue the offenders. The stringent economic sanctions imposed during these early-modern conflicts were not consistently upheld, even as bold

public statements were made about the strength of enmity. The importance of international economic relationships meant that trade had to be allowed to continue, and governments needed to

reconcile their political aims with economic necessity. Early-modern economies were interdependent, so it was in nobody’s interests to destroy established trading routes, whatever the

political context. We are already seeing the broader consequences of sanctions imposed on Russia, particularly in terms of the rising prices of oil and food. As the world watches Ukraine, it

is worth remembering that in the past, the cost of upholding economic sanctions was often seen as too high a price to pay.