It was the Mongols that invaded Russia
I believe the answer would be Abraham Lincoln.
In their 1943 meeting at Casa Blanca, Allied leader decided to invade Italy.
Unconstitutional sounds like the most probable choice
Answer:
Wilson cited Germany's violation of its pledge to suspend unrestricted submarine warfare in the North Atlantic and the Mediterranean, as well as its attempts to entice Mexico into an alliance against the United States, as his reasons for declaring war.
(https://history.state.gov/milestones/1914-1920/wwi#:~:text=Wilson%20cited%20Germany%27s%20violation%20of,his%20reasons%20for%20declaring%20war.)
Explanation: