Russian forces strike military training base near Poland

Russian forces struck a military training base in western Ukraine on Sunday morning, bringing their offensive closer to the border with Poland.

Eight rockets were fired at the Yaroviv military range, located 30 kilometres northwest of Lviv, the regional administration said, without offering any details about possible casualties. The range is 35 kilometres from Ukraine's border with Poland.

Since 2015, the U.S. has regularly sent instructors to the military range, also known as the Yaroviv International Peacekeeping and Security Centre, to train Ukraine's military and the facility has also hosted international NATO drills.

On Saturday, Russia bombarded cities across Ukraine, pounding Mariupol in the south, shelling the outskirts of the capital, Kyiv, and thwarting the efforts of people trying to flee the violence.

In Mariupol, which has endured some of the worst punishment since Russia invaded, efforts to bring food, water and medicine into the port city of 430,000 and to evacuate civilians, were prevented by unceasing attacks. More than 1,500 people have died in Mariupol during the siege, according to the mayor's office, and the shelling has even interrupted efforts to bury the dead in mass graves.

Talks aimed at reaching a ceasefire again failed Saturday, and while the U.S. announced plans to provide another $200 million to Ukraine for weapons, a senior Russian diplomat warned that Moscow could attack foreign shipments of military equipment.

Ukrainian President Volodymyr Zelensky accused Russia of trying to break his country apart, as well as starting "a new stage of terror" with the alleged detention of a mayor from a city west of Mariupol.

"Ukraine will stand this test. We need time and strength to break the war machine that has come to our land," Zelensky said during his nightly address to the nation Saturday.

Russian soldiers pillaged a humanitarian convoy that was trying to reach Mariupol and blocked another, a Ukrainian official said. Ukraine's military said Russian forces captured Mariupol's eastern outskirts, tightening their siege of the strategic port. Taking Mariupol and other ports on the Azov Sea could allow Russia to establish a land corridor to Crimea, which it seized from Ukraine in 2014.

An Associated Press journalist in Mariupol witnessed tanks firing on a nine-story apartment building and was with a group of hospital workers who came under sniper fire on Friday. A worker shot in the hip survived, but conditions in the hospital were deteriorating: Electricity was reserved for operating tables, and people with nowhere else to go lined the hallways.

Among them was Anastasiya Erashova, who wept and trembled as she held a sleeping child. Shelling had just killed her other child as well as her brother's child, Erashova said, her scalp crusted with blood.

"No one was able to save them," she said.

In Irpin, a suburb about 20 kilometres northwest of central Kyiv, bodies lay out in the open Saturday on streets and in a park.

"When I woke up in the morning, everything was covered in smoke, everything was dark. We don't know who is shooting and where," resident Serhy Protsenko said as he walked through his neighborhood. Explosions sounded in the distance. "We don't have any radio or information."