Is it legal to use images on your site with someone else's URL (vk.com)?

Question

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The question arose:
Is it even legal to insert images with other people's URLs on your site?
For example, VK has a bunch of interesting pictures in the form of flags at a convenient url: vk.com/images/flags/ru.png
Can I use them on my blog? For example, if you make a list by country on the main page of 50 countries, do you get 50 queries on each visit?

Answer 1

> Is it even legal to embed images with other people's URLs on your site?
Copyright does not say anything about this, these are just technical details of using the picture.
> Can I use them on my blog?
Usually not. But such flags are often taken from well-known collections. The same flag, pixel for pixel, hangs in my tray (Punto Switcher) - so it interested me, and I found the source: www.famfamfam.com/lab/icons/flags/. You can, they are, in fact, PD (any use without any conditions).
> For example, if you make a list by country on the main page of 50 countries, then you get 50 requests for each visit?
Yes.