Romney suggested in a New York Times essay that NATO could engage in Ukraine, potentially obliterating Russia's struggling military, as an option against Putin.

Romney suggested that the West confront China and other Russian allies with an ultimatum.

Russia's use of a nuclear weapon would be a reorientation of geopolitics and any nation that retained ties with Russia would become a global pariah.

Romney warned that Putin could use nuclear weapons in the war against Ukraine, citing warnings from former Secretary of State Henry Kissinger, Russian ambassador to the US Anatoly Antonov, and CIA Director William Burns.

In April, Burns warned that Putin's desperation could lead to the use of tactical nuclear weapons or low-yield nuclear weapons.

Romney encouraged the US to support the war effort against Russia. Romney wrote that if the US stopped sending weapons and pressured Ukrainian President Volodymyr Zelenskyy to concede to Russia, Putin would continue to rule.

The aid package was signed by President Joe Biden on Saturday.

Romney has been vocal about his disdain of Putin since the start of the war, referring to the Russian president in February as a "small, evil, feral-eyed man" trying to shape Russia into ampire.

Russian political scientist Alexei Fenenko told "60 Minutes" that Putin's invasion of Ukraine was a rehearsal for a larger conflict.