I am currently playing ukraine in a europe clash of nations game and my allies are yugoslavia (as you can see) and sweden. Its day 7 on the server and ive conquered all of poland, communist russia, russian empire and most of the AI nations in the baltic region. But now, caucasus has surprise attacked me and im heavily (maybe over exaggerating) underprepared. He has 2 (200-300 HP) naval stack units with battleships, cruisers, destroyers in each one of them. (1 can only be seen but the other one is next to Mariupol where the green spot is). Meanwhile, i only have 3 submarines for my naval fleet and the worst part is that i am facing a manpower shortage as well. As of now, Yugoslavia (as u can see) is attacking him from the west in Bulgaria and i plan to help him too. But he has many air units too near my border (not there in image and video but ive seen). I only have 1 proper air stack which idk how to use as of now. Due to my navy being trash, he has complete naval superiority and has the freedom to land his troops without any interference. However, i have the better land army by a mile but as of the current situation, i can only defend and cant embark them (cuz he has subs). My current plan as of now is to let Yugoslavia distract him so that he pulls some of his troops and naval units (hopefully) and to let him invade Mariupol and the eastern lands while my army (land) will wait nearby (out of naval and aircraft range). Basically, im letting him deploy troops on my land and hopefully let him impale himself in my land. The bad part is that he is fully covered by the sea and so until i have a proper navy, i cant embark any of my troops at all. He is also an extrememky experienced player (170-180 and joined in 2017) and i (lvl 101 since 2020) just came back from a 1-2 year break. So im not aware of any tricks as of now. Kindly help
I WILL ALSO POST PHOTOS OF MY CURRENT SITUATION