Cooperation with Finland is Sweden's most in-depth.

It also extends into a possible war and the countries have declared a willingness to send troops to each other in the event of an attack.

But there is no guarantee. 

Matti Pesu, a senior researcher at the Foreign Policy Institute in Helsinki, believes, however, that Finland would send troops to Sweden in the event of an attack. 

- It would be a big political decision, but the bilateral cooperation is so deep that it would be very difficult to say no, he says. 

No guarantees

SVT has reviewed 18 of Sweden's defense agreements and there are no guarantees of assistance in the form of armed forces. 

- Sweden has become better at military cooperation with other states, but in this context we instead lack mutually binding defense obligations, says Jacob Westberg, senior lecturer in military science at the Swedish National Defense College.

Admittedly, the EU's defense clause states that a Member State must help an attacked Member State “with all available means” - something that Sweden and Finland recently reminded other Member States of. 

"Somehow Sweden would get help," says Malena Britz, a researcher at the Swedish National Defense College. 

- But it can be money or weapons and not boots on the ground in the first place. 

Deterrent purpose

According to Magnus Christiansson, cooperation with the United States, with or without security guarantees, has an important deterrent purpose.  

"Every time American forces are in Sweden, it sends a sharper signal to Russia about friendship between Sweden and the United States," he says.

According to Magnus Christiansson, the idea of ​​Sweden's many defense collaborations is the freedom of action that comes with being non-aligned.  

- You experience that you are not bound as you become if you are part of a defense alliance. 

If Sweden were to face an armed attack, Sweden currently has to rely primarily on its own defense, according to him. 

- On the other hand, the hope must be that these collaborations have created such strong ties and that the United Kingdom and the other great powers at this hypothetical occasion have no other priorities to think about.