international situation
Refers to the overall state of affairs among nations, often used in news and political analysis.
The international situation is tense.
He is knowledgeable about international affairs.
国際関係 refers to the relationships between countries, while 国際情勢 emphasizes the current state or trends of those relationships.
世界情勢 is a broader term for the world situation, whereas 国際情勢 focuses specifically on relations between nations.
Compound of 国際 (international) and 情勢 (situation, state of affairs).