President Donald Trump has announced the US will decide within two weeks whether to enter Israel’s air campaign against Iran, citing a “substantial chance” for diplomacy. Meanwhile, at the G7 summit in Canada, he left early, urging evacuation of Tehran, and denied departing to work on a ceasefire, though the French suggested he floated one. His departure underscores mounting global concern as Israel and Iran exchange strikes and world leaders seek to avert regional escalation.
Tensions between the US and Iran are just one example of how long-standing rivalries between nations can escalate into open hostility. Whether through war, economic sanctions, or diplomatic standoffs, some countries remain locked in conflict for decades, driven by deep-rooted suspicion, ideological divides, or clashing national interests.
So, which countries have the greatest rivalries? Click through and read about the issues dividing these nations.