Ukraine's military has paused strikes on Russian oil refineries after pressure from President Trump, according to a Wall Street Journal report published Thursday.

Ukrainian units conducting long-range strikes received instructions in mid-October to complete missions already underway but halt further attacks on refineries, the report said. The unofficial pause is expected to last at least until after the Nov. 3 U.S. midterm elections and potentially into November.

The development comes as Trump has grown frustrated with Ukrainian strikes on Russian energy infrastructure, which he has linked to record-high diesel prices in the United States. Relations between Trump and Ukrainian President Volodymyr Zelenskyy have deteriorated in recent weeks over the issue.

Trump announced a deal to purchase diesel from Moscow and waived sanctions authorized by legislation signed into law in September. Adviser Jared Kushner allegedly pressed Ukrainian officials during an Oct. 20 meeting in Oslo for a 30-day halt as a gesture toward U.S. diplomatic efforts.

Ukraine had previously described its drone campaign against Russian refineries as its primary means of responding to Russian attacks on Ukrainian infrastructure. Russia has continued and, in some cases, intensified strikes on Ukrainian energy targets during the reported pause.

European allies reportedly advised Zelenskyy to consider the political sensitivity of energy prices in the U.S. ahead of the midterms. The Wall Street Journal cited people familiar with the operations, though Reuters noted that it could not independently verify the account.