[DeepSeaTortoise]

Not sure how to delete my previous comment but the claim that martial law extends only the power of the parliament is wrong. I've clearly relied on a bad source of information.

There is a strong argument that the Ukrainian President looses a lot of powers when his term ends under martial law, but negotiating international treaties is not one of them.

The Ukrainian constitution doesn't explicitly allow for the President to remain in office under martial law, but it does not allow for pretty much any elections and doesn't provide for a transfer of power as it does under other circumstances.

It also requires the office of the President to not be vacated.

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So, the transfer of power that would occur under an irregular vacancy from the President to the Prime Minister likely occurs to the President himself if his term ends under martial law?