At the latest summit in Vilnius, Lithuania, NATO leaders faced the critical issue of whether and when to admit Ukraine into the organization. While some NATO members, for example the Baltic states, vehemently backed Ukraine's NATO bid, the U.S. and a few others decided that Ukraine is not ready. Their final joint communique stopped short of handing Kyiv an invitation or a clear timeframe for accession. Ukrainian President Volodymyr Zelensky called the decision "unprecedented and absurd."

What does the internal division tells us about NATO at the moment? How will this decision regarding Ukraine's membership influence the future of the alliance? Host Liu Kun is joined by Shen Dingli, Professor at the Institute of International Studies, Fudan University; Helga Zepp-LaRouche, Founder of The Schiller Institute, a Germany-based political and economic think tank; and Dr. Alexey Muraviev, Associate Professor of National Security and Strategic Studies at Curtin University in Australia.