There was no way Serbia could avoid Yugoslav war, because if there was Serbia would have done it...
Interventionists claimed that the United States could avoid war if it refused aid to any nation at war.
Interventionists claimed that the United States could avoid war if it sent aid to Britain.
To avoid going to war you could pay some one to go for you.
Serbia was in WWI because Austria-Hungary declared war on them.
Serbia Serbia
When Russia found out that Austria-Hungary was declaring war on Serbia, they came into alliance with Serbia for several reasons.
Interventionists claimed that the United States could avoid war if it sent aid to Britain.
The 1st country to declare war on Serbia was Austria-Hungary.
World War 1 originally started because a rebel group in Serbia called the Black Hand assassinated Ferdinand the Arch Duke of Austria-Hungry. Austria- Hungry then said to Serbia do something to this or we are going to war. Serbia refused. Austria-Hungry had a secret alliance with Germany who secretly wanted the war, so they could gain more power. Serbia had an alliance with Russia who had an alliance with Britain and France. So when Serbia and Austria-Hungry went to war so did Germany, Russia, Britain, and France. Thus starting World War 1.
The war between Serbia and Kosovo was going on. The war started because Serbia wanted more territory from Kosovo.
Austria-hungary attacked Serbia
Russia