WWI Crossword

What is it called when nations/people come together for mutual benefit?
What is a temporary sop in fighting called?
The murder of a political leader
The belief that a county should maintain a strong military
Not helping either side in a conflict
Information used to promote a cause/point of view
When the Government has total authority over its people
What's a large ditch dug in the ground ( used in war)
Formal agreement between two countries (typically for peace)
Russian ruler/ emperor (this answer involves a slash)
A communist political party led by Vladimir Lenin
International peace plan created by U.S. President Woodrow Wilson
An international organization meant to discuss conflicts and world issues
Activity or skill of managing international relations
A serious disagreement/argument and can sometimes lead to violence
Consists of Germany, Italy, and Austria-Hungary
Where it all started
Who got blamed the most
Consists of France, Great Britain, and Russia
That one missing piece