The United States and Ukraine on Wednesday signed a minerals deal after a two-month delay, in what President Donald Trump's administration called a new form of U.S. commitment to Kyiv after the end of military aid.

Ukraine said it secured key interests after protracted negotiations, including full sovereignty over its own rare earths, which are vital for new technologies and largely untapped.

Trump had initially demanded rights to Ukraine's mineral wealth as compensation for the billions of dollars in U.S. weapons sent under former president Joe Biden after Russia invaded just over three years ago.