[null and void]

Can an illegitimate leader of a country make legitimate legally binding treaties?

Pray tell what is unreasonable about a country asking for the bona fides of the alleged leadership of another country before entering into agreements with that government.

[Red Steel]

Can an illegitimate leader of a country make legitimate legally binding treaties?

Nope.

[Las Vegas Ron]

Pray tell what is unreasonable about a country asking for the bona fides

Wouldn't it be an amazing thing to see our allies and even our enemy's become "birthers"?

The LSM and a bunch of others would sh!t!