The call was reported by an unidentified whistleblower who spoke of an “urgent concern” about the conversation on July 25, 2020, and came shortly after Trump blocked the release of military aid to Ukraine.

A senior official later testified that the president made it clear that the release of that aid was contingent on an investigation into Biden. This was denied by the White House at the time.

A trial took place that could have led to Trump's removal, but in the end he was acquitted.

Now Ukraine is in the middle of war and the tide has turned with Russia able to get weapons from Iran and troops from North Korea, so a Trump victory will have a big impact.

If Trump turns off the tap or cuts funding, it could not only demoralize the Ukrainians but also lead to serious shortages, particularly of weapons, but also of logistical support, intelligence and other things that the US currently provides.

Europe is not that united and many countries do not collectively agree to support Ukraine and they simply do not have the spare military capacity to support Ukraine. Most have tiny armies and lack the necessary aircraft, vehicles and ammunition.

I think if you are in Ukraine right now you are very worried.