The decision left officials on both sides of the Atlantic scrambling to find out how long the pause might last.

Ukraine is moving forward with plans for joint weapons production with allies while the U.S. halts some arms shipments

By Ben Aris in Berlin Washington has halted the delivery of missiles used in air defence and ammunition to Kyiv on July 1, claiming its own stocks were dwindling causing consternation in Kyiv which is battling to hold off massive Russian drone and missile barrages on a daily basis.