President Joe Biden is visiting Berlin on Thursday and Friday after Hurricane Milton forced him to cancel his trip originally scheduled last week.

A meeting at Ramstein Air Base with Ukrainian President Zelensky and key European leaders was also postponed.

But with next month's U.S. election looming in the background, many are wondering if Biden's visit this week will bring Ukraine closer to NATO membership.

I mean, I'd be surprised if anything that fundamental was announced after this meeting.

I think this meeting is more symbolic.

I think it's for, you know, Biden to sort of underscore again how important support for Ukraine is, how important, you know, the U.S. engagement with Europe is and U.S. leadership.

This has been a major legacy of his presidency.

So I think he just wanted to kind of signal that again and set the stage.

But really big decisions like the future of Ukraine, NATO membership aren't going to happen before November, and also the Europeans are going to have to play a role there.

And what could the U.S. elections mean for the future of NATO?

The negative scenario under Trump or even Harris, if you have Harris and a really divided or stuck EU, as we framed it, is a very weakened NATO, because you have a massive security threat in the eastern border of the continent that requires either a really strong U.S. presence or something to change on the European side and for the Europeans to gain capabilities.

And if the Europeans don't do that, then you'll have a very weakened NATO right away in 2025 and a very weakened European security, let's put it that way.

And under a Harris presidency?

I'm American, so...

And with a Harris presidency, you're looking at a similar result, less dramatic, but by 2027, 2028 as well, because the U.S. simply doesn't have the capacity to stay focused on Europe to the extent that it has.

Security experts are urging Europe to take a more united approach in producing weapons and say that Europe needs to accelerate making tough decisions for the future of NATO.

Liv Stroud for Euronews.