If America is going to threaten its allies, Europe will have to step up and defend itself.

Get real-time updates on international politics, economic changes, conflicts, and environmental issues. Access the latest ...

Most US allies fear Vladimir Putin will not stop at Ukraine's borders if he wins, and that Europe's biggest land war in decades poses an existential threat to their security.

As we reported earlier, Donald Trump has suggested that Ukraine "may or may not be Russian someday" (see 8.17am post). We've been keeping an eye on reaction in Ukraine, where the comments are ...