Russia launches largest airstrike on Ukraine as Putin projects strength; H.R. McMaster says President Trump will ramp up pressure if peace talks fail.

The US halt in air defence supplies and other weapons to Ukraine could deal a significant setback to its forces at one of the most dangerous moments of the war. The halted munitions include interceptors for crucial Patriot air defence systems,

Ukrainian authorities are enlisting European help to increase domestic military production as the United States pauses some weapons shipments to Ukraine.

Ukraine’s Foreign Ministry summoned a senior U.S. diplomat to express the “critical importance” of continuing U.S. weapons deliveries and to emphasize that any delay or postponement would only encourage Russia to continue the war.

The move "was made to put America’s interests first," a White House spokeswoman said, as U.S. munitions have been depleted in recent years.

The U.S. is halting some shipments of air defense missiles and other munitions to Ukraine amid concerns that its own stockpiles of such supplies have declined too much, officials said Tuesday