The defense secretary’s instructions, which were given before President Trump’s blowup with the Ukrainian president, are apparently part of an effort to draw Russia into talks on the war.
Defense Secretary Pete Hegseth has ordered U.S. Cyber Command to halt offensive operations against Russia, according to a current official and two former officials briefed on the secret instructions. The move is apparently part of a broader effort to draw President Vladimir V. Putin of Russia into talks on Ukraine and a new relationship with the United States.
Mr. Hegseth’s instructions, part of a larger re-evaluation of all operations against Russia, have not been publicly explained. But they were issued before President Trump’s public blowup in the Oval Office with President Volodymyr Zelensky of Ukraine on Friday.
The precise scope and duration of the Defense Department order is not clear, as the line between offensive and defensive cyberoperations is often a blurry one.
Still, retaining access to major Russian networks for espionage purposes is critical to understanding Mr. Putin’s intentions as he enters negotiations, and to tracking the arguments within Russia about what conditions to insist upon and what could be given up.
Former officials said it was common for civilian leaders to order pauses in military operations during sensitive diplomatic negotiations, to avoid derailing them. Still, for President Trump and Mr. Hegseth, the retreat from offensive cyberoperations against Russian targets represents a huge gamble.
It essentially counts on Mr. Putin to reciprocate by letting up on what many call the “shadow war” underway against the United States and its traditional allies in Europe. The leading European powers continue to say their support of Ukraine is undiminished even as Mr. Trump, who has sought to portray himself as a neutral arbiter in seeking to end the war in Ukraine, has at times sided openly with Mr. Putin.