They are right to focus on China’s position of power. Russia is now so dependent on the only major economy still taking the risk to support its regime, that China could effectively force Vladimir Putin to end the conflict.
The extent of Russia’s economic dependence became apparent fairly quickly after its full-scale invasion of Ukraine in February 2022. Just a few months later, things were not going to plan.
In the hope of putting pressure on European countries supporting Ukraine, Russia decided to cut almost all of its exports of gas to the West. Before the war, Russia had provided about 40% of Europe’s gas.
While at first that decision provoked an energy crisis and a surge in bills across the continent, Europe eventually managed to wean itself from Russia’s supply. They did this in part by replacing gas with other sources of energy, but also by substituting Russian imports with gas from other countries, including the US.