U.S. President Joe Biden announced more than $8 billion in military assistance for Ukraine on Thursday to help Kyiv repel Russian invaders, using a visit by President Volodymyr Zelenskiy to make a major commitment.

Israel announced Thursday that it had reached agreement with the U.S. for an $8.7 billion aid package to support ongoing military efforts. The funding for the package was appropriated by Congress in the national security supplemental that the president signed into law in April.

US military aid packages for Ukraine have been smaller in recent months, as the stockpiles of weapons and equipment that the Pentagon is willing to send Kyiv from its own inventory have dwindled. The shift comes amid concerns about US military readiness being impacted as US arms manufacturers play catchup to the huge demand created by the war against Russia.