Would you let one or two cities have veto power over the policy of an entire country? If not then what's the difference here? If yes do you think that would work?
Of course the important thing is to decide what should be handled at the city, region, nation and EU level. There's a tradeoff. Decisions made at lower levels are generally better for accountability and give better adaptability to local circumstances but on the other hand they often lose leverage.
A city wouldn't be able to talk as an equal to large companies like Apple and Google for example, even many countries can't. But the EU can. Replace Apple / Google by Russia / China / US and it's even worse.
> Would you let one or two cities have veto power over the policy of an entire country?
And this is why analogies are bad.
A few important details:
1) The EU is not a country.
2) The one-country veto already has limited applications within the context of the EU. Foreign policy is one of the most important, but most EU laws start from the Commission and go through Parliament instead where they pass by a simple majority.
3) What von der Leyen is in effect asking for is for EU member nations, who are sovereign and with each having their own foreign policy, to subordinate their foreign policy to the EU’s foreign policy. That is a massive power shift from the members to the EU Commission.