Washington: In a phone call, US Defense Secretary Lloyd J. Austin and Ukrainian Defense Minister Rustem Umerov discussed the ongoing Russia-Ukraine war, according to the US Defense Department. According to Anadolu Agency, Austin and Umerov addressed 'battlefield dynamics' and 'an update on U.S. security assistance support for Ukraine' during their conversation. The discussion highlighted the entry of North Korean soldiers into combat against Ukraine, which US officials have identified as a "significant" escalation in the ongoing conflict. Austin reiterated the Biden administration's commitment to accelerating security aid for Ukraine, emphasizing the urgency of supporting Kyiv in its fight against Moscow. He also provided an update on 'the unprecedented scope and pace of US efforts' to equip Ukraine with the necessary capabilities to confront Russian forces effectively. The timing of these discussions is critical, as the Biden administration faces a looming transition of power with President-elect Donald T rump set to take office on January 6. A new defense secretary will succeed Austin, and Trump's stance on the conflict remains uncertain. He has previously suggested a potential shift in US policy, possibly reducing aid to Ukraine to expedite a resolution to the war.