North Korea, facing accusations of illegally supplying weapons to Russia, slammed the U.S. decision to send $8 billion in military aid to Ukraine, labeling it an “incredible mistake” and warning that it risks sparking nuclear conflict with Russia. U.S. President Joe Biden announced the new aid package, which includes long-range weapons to strengthen Ukraine’s ability to hit Russian targets from safer distances, during President Volodymyr Zelensky’s visit to Washington. Kim Yo Jong, the powerful sister of North Korean leader Kim Jong Un, accused the U.S. of intensifying the war in Ukraine and p…