According to US officials, President Biden has authorized Ukraine to launch an attack deep into Russia using long-range missiles provided by Washington.
For fear of escalating the conflict, Washington has previously prohibited such operations using US-made ATACMS missiles.
The significant policy move occurs two months before President Joe Biden cedes office to Donald Trump, whose victory has sparked concerns about how the US will continue to help Kyiv.
Stay up to date on this news in real time.
For what reason has the United States let Ukraine to use long-range missiles inside Russia?
For more than a year, Ukraine has been employing ATACMS against Russian targets within Ukrainian territory that is under occupation.
In the area near the Kursk border, American weapons and equipment are already being utilized within Russia.
