The United States provided intelligence that helped Ukrainians find and kill many Russian generals who died during the war in Ukraine, according to senior U.S. officials, according to the New York Times..

Ukrainian officials said they killed about 12 generals on the front lines, a number that startled military analysts..

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Intelligence assistance to locate target is part of Biden administration's covert effort to provide Ukraine with real-time information.

The intelligence also includes expected Russian troop movements derived from recent U.S. assessments of Moscow's secret combat plan for fighting in the Donbass in eastern Ukraine, officials said.. However, unnamed individuals declined to state how many Russian generals they think were killed as a result of US aid..

The United States has focused on providing information on the location and activities of the mobile headquarters of the Russian army, which is constantly on the move.. The Ukrainian military combined this geographic information with its own intelligence, including intercepted enemy communications.. In this way, they were able to obtain information about the presence of high-ranking Russian officials at headquarters and carry out artillery and other attacks, as a result of which Russian generals and senior officers were destroyed.

The intelligence sharing is part of an expanded flow of US aid that also includes heavy weapons and tens of billions of dollars in financial assistance as Russia's war against Ukraine threatens to enter a new phase in the coming months..

U.S. intelligence support for Ukrainians has had a decisive impact in the course of hostilities. With its help, the coordinates of already identified targets are clarified and new ones are indicated.. The flow of intelligence on Russian troop movements that America has passed to Ukraine is without precedent, New York Times sources say..

Having failed to advance on Kyiv at the start of the war, Russia attempted to regroup with a more concentrated attack on eastern Ukraine..

Officials interviewed for this article, on condition of anonymity, discussed the details of the classified intelligence that was shared with Ukraine..

The administration sought to keep much of the intelligence from the battlefield secret, fearing it would be seen as an escalation and provoke Russian President Vladimir Putin into a wider war..

U.S. officials did not describe how they obtained information about Russian military headquarters for fear of compromising their collection methods.. But throughout the war, US intelligence agencies used various sources, including secret and commercial satellites, to track the movement of Russian troops..

Asked about intelligence being provided to Ukrainians, Pentagon spokesman John F.. Kirby said " But he acknowledged that the United States is providing "

Not all strikes were carried out with the help of American intelligence. The strike over the weekend at a location in eastern Ukraine visited by Gen. Valeriy Gerasimov, Russia's highest-ranking uniformed officer, was not supported by U.S. intelligence information, several U.S. officials said..

The United States forbids itself from sharing intelligence on Russia's most senior leaders, officials say.

Nevertheless, officials acknowledged that American intelligence played a critical role in the deaths of other generals..

The Biden administration is also supplying new weapons that should boost Ukraine's ability to strike high-ranking Russian officers.. A smaller version of the Switchblade drone now appearing on the battlefield can be used to identify and destroy them..