The United States still has no evidence that China has supplied weapons to Russia but, if it did, this would "potentially expand the war to a global level," warns the Pentagon chief.
Meanwhile, EU leaders are preparing to fly to China to discuss Xi's peace plan.
Von der Leyen and Macron will go to Beijing in early April.
Borrell also announces a trip to China soon.
For Spaniard Sanchez, Xi's plan "has interesting ideas".
Biden reiterates, an attack on a NATO member is an attack on everyone
ANSA Agency
Ukraine: the Pentagon, if China arms Moscow we risk global conflict - Europe
Moscow's threat: 'We could reach Kiev and Lviv'.
Former President Medvedev: 'Nothing can be excluded'.
More attacks in Donetsk, a missile hits a building that housed a humanitarian reception center (ANSA)
Ukraine: Biden, attack on NATO member is attack on all
"An attack against one is an attack against all": reiterated Joe Biden, re-launching the mutual defense commitment of NATO countries while speaking of the Ukrainian conflict in the Ottawa parliament.
Austin, if China arms Moscow, we risk global conflict.
The United States, the Pentagon chief said, still has no evidence that China has supplied Russia with weapons, but if it did, and the United States is monitoring very closely, this "would prolong the conflict and certainly expand the war potentially
not only in the region but globally".
In Ukraine, Russian forces could push as far as Kiev and even Lviv
if Moscow deems it necessary.
The new threat comes from former president Dmitry Medvedev in an interview with the Russian media.
"Here - said Medvedev, quoted by the RIA Novosti agency - nothing can be excluded. If you need to go to Kiev, or Lviv, then you need to go to Kiev or Lviv to eliminate this infection".
ANSA Agency
Podolyak to ANSA, 'Meloni understands the pain of the Ukrainians' - World
Advisor to the Ukrainian president Zelensky: 'I am very impressed, the premier speaks with the right emotion' (ANSA)
