By Kanishka Singh, Frank Jack Daniel and Angelo Amante WASHINGTON/KYIV/ROME (Reuters) -U.S. President Donald Trump said on Thursday the United States would supply weapons to Ukraine via NATO and that he would make a "major statement" on Russia on Monday.

The arrangement allows Ukraine to get weapons it needs in its war with Russia while providing a way for Europe to increase its defense spending as promised.

President Donald Trump told NBC he struck a deal with NATO on Thursday for the US to send weapons to Ukraine through the alliance, and that NATO will pay for those weapons “a hundred percent.”

Trump’s decision to help Ukraine fight an onslaught of Russian attacks reverses a Pentagon decision to withhold defensive weapons.

Russia launched its largest drone attack on Ukraine in a single day since the war began more than three years ago, according to the Ukrainian Air Force on Wednesday.