President Donald Trump will deliver a “major statement” on Russia next week, he told NBC News on Thursday night while sharing details on new U.S. weapons shipments to Ukraine, as Moscow continued to expand its aerial attacks on major Ukrainian cities,

I’m not happy,” Trump said after a call with Vladimir Putin, noting that he doesn’t believe the Russian leader is ready to end the war. “I’m very disappointed.”

Russia fired a total of 537 aerial weapons at Ukraine, including 477 drones and decoys and 60 missiles, Ukraine’s air force said.

A Russian drone attack on the Ukrainian city of Kharkiv on Friday damaged a maternity hospital, authorities said, terrifying patients as windows shattered and shards of glass fell on to the beds, leaving families rushing to shelter their babies.

While Russia's overnight drone and missile attacks on Ukraine have hit record levels, on the ground its military is claiming territorial gains. Last month Russian forces seized 556 sq km (215 sq miles),