President Joe Biden has authorized Ukraine to use U.S.-supplied long range missiles to strike Russia, Reuters reported, citing sources. This marks a U.S. policy shift coming at the tail-end of Biden's time in office. President-elect Donald Trump has vowed to limit U.S. support for Ukraine and end its war with Russia.

The Biden administration will allow Kyiv “limited” use of the ATACMS long-range missile system to strike enemy positions in Kursk, a significant reversal of U.S. policy.

The decision is a major change in U.S. policy and comes as Donald Trump, who has promised to limit further support for Ukraine, prepares to take office.