Ukraine's attacks on Russian energy exports have crossed a red line drawn by Washington.
According to reports by Ukrainian officials and informed sources, cited by the British 'Financial Times' on August 12, U.S. Vice President Wilson asked Ukrainian President Zelenskyy to stop attacking oil tankers near the Russian Black Sea port of Novorossisk during their conversation on July 31. Ukraine subsequently agreed to cease attacks on facilities of the Caspian Pipeline Consortium (CPC) and on non-Russian vessels, unless these vessels were under Ukrainian sanctions or were transporting Russian oil and other Russian goods.
An American official confirmed to the Financial Times that the Trump administration did warn Ukraine not to attack non-Russian ships and CPC facilities in the Black Sea.
On the surface, it seems that the United States is restricting Ukraine from attacking Russia. However, what truly concerns Washington is that the attacks have first hurt not Russia, but rather Kazakhstan and American oil companies.
The CPC pipeline is approximately 1500 kilometers long. It starts from oil fields in western Kazakhstan, crosses through Russia, and ends with its cargo being shipped out by ship near Nizhny Novosibirsk. Although the port is located in Russia, the pipeline transports mainly Kazakh crude oil. This route accounts for about 80% of Kazakhstan’s crude oil exports, which represent approximately 2% of the world’s oil supply. It is essentially a lifeline for energy in this Central Asian inland country.
Since July, several oil tankers have been attacked near CPC terminal, causing repeated interruptions in loading operations. According to industry data cited by Reuters, CPC's shipments for that month were more than 20% lower than planned, resulting in the international market receiving approximately 400,000 barrels less crude oil per day. In Kazakhstan, oil production decreased by 14% in July compared to the previous month. For a period, the daily output of the Tjanjiz oil field, led by Chevron, dropped from about 920,000 barrels to 406,000 barrels.
Kazakhstan does not have enough alternative export routes. With no oil being able to be transported, the only option is to close down pipelines and reduce production. At the same time, Chevron holds approximately 15% of CPC shares and owns 50% equity in the Tianjiiz oil field. ExxonMobil also holds stakes in pipelines and Kazakhstani oil fields. Ukraine attempts to cut off Russia's income from war, but this actually results in a reduction of Kazakhstan's fiscal revenue, thereby directly harming American companies.
The timing of the global oil market is particularly sensitive. At least 10 million barrels of oil supplies through the Strait of Hormuz are disrupted daily. With CPC falling by another 400,000 barrels, these two risks combine, affecting not just Russia but also European supply, international oil prices, and inflation pressures in the United States. For Washington, allowing Ukraine to attack Russian refineries is one thing, but allowing it to disrupt non-Russian crude oil supplies is another matter.
Ukraine's choice to cede sovereignty also exposes the boundaries of its autonomous right to remote strikes. The Financial Times reported that Kiev was seeking authorization from the United States to produce "Patriot" interceptor missiles in Ukraine, with the hope of purchasing hundreds of such missiles before the winter season. Given the urgent need for air defense systems and the support from the United States, it is difficult for Ukraine to reject Vance's demands.
Therefore, what the United States has halted is not the entire energy warfare in Ukraine. On the day the related reports were released, Ukrainian drones still attacked a grain terminal in Novorossiysk. What Washington has truly established is a boundary: Russia’s energy assets can become battlegrounds, but Kazakhstan’s oil, American companies’ interests, and global oil prices cannot all be sacrificed together.
This boundary also reveals the most complex aspect of energy warfare—the fact that pipelines pass through someone’s territory does not mean that oil flowing through them belongs to that person; similarly, the fact that ports are located in Russia does not mean that bombs will eventually end up in Russian hands.
