Truss, Stoltenberg discuss Russia's aggression against Ukraine

NATO Secretary General Jens Stoltenberg and British Foreign Secretary Liz Truss discussed Russia's aggressive actions against Ukraine in a phone call on Tuesday, December 28.

According to Ukrinform, Truss announced this on Twitter.

"Spoke to NATO Secretary-General Jens Stoltenberg about Russia's aggression towards Ukraine. We agreed that NATO is resolute in its support for Ukraine. An incursion would lead to severe costs for Russia," she wrote.

Truss added that "any dialogue must fully respect Ukraine's sovereignty."

Read also: Accepting Russia's "security guarantees" in any form would be humiliating to U.S., NATO - Kuleba

Ukrainian Foreign Minister Dmitry Kuleba said earlier that the United States and NATO would not accept Russia's demand to halt NATO's eastward expansion, as it would be the greatest humiliation for the U.S. and NATO since the military alliance was founded.