Russian President Vladimir Putin may use the Biden administration’s support for Ukraine as a pretext to order a new campaign to interfere in American politics, U.S. intelligence officials have assessed. Intelligence agencies have so far not found any evidence that Putin has authorized measures like the ones Russia is believed to have undertaken in the 2016 and 2020 presidential elections in support of former President Donald Trump, according to several people familiar with the matter who spoke on condition of anonymity to discuss sensitive findings. But given Putin’s antipathy toward the West and his repeated denunciations of Ukraine, officials believe...