Ukraine managed to wrangle some more favorable terms out of the United States before signing the long-awaited minerals deal on Wednesday.

After months of tense negotiations, the U.S. and Ukraine signed a deal that is expected to give Washington access to the country’s critical minerals and other natural resources, an agreement Kyiv hopes will secure long-term support for its defense against Russia.

The deal’s language marks a win for Kyiv, which has been seeking any concrete show of support from the United States since President Trump returned to power.