What follows is a list of 20th century international disagreements which could have flamed into full-scale war but didn't. For those of interest, please provide a brief description of causes, major battles, and outcomes. Which would probably have resulted in the greatest overall change from OTL. For some wars, dates are only suggestions.
- The undeclared US/English naval conflict of 1914-15 (in response to early "violation" of freedom of seas by RN)
- The US/Mexican War of 1916-18
- The Continuation War of 1919-21 (Germany refuses to sign versailles)
- The Pacific War of 1922-26 (US/Japan)
- The Rhineland War (France, UK invade Germany following Hitler's occupation of Rhineland.
- The Soviet/Japanese War of 1937-41
- World War 3 -1945-50 (Anti-Hitler alliance breaks up several months before Hitler's defeat with open hostilities between US/UK and USSR in 1945)
- World War 3 - 1952-1958? (Korean War expands to direct war between US/UK-led alliance and USSR/PRC)
- Suez War of 1956-60 - UK/France continue Suez operation as full-scale invasion/occupation of Egypt.
- World War 3 (1961 Berlin crisis erupts into war)
- World War 3 (1962 - Cuban missile crisis goes ballistic )
- Sino-Soviet War of 1970-75
- Hostage War of 1979-80 (US invasion of Iran)
- India-Pakistan War of 2000
- The undeclared US/English naval conflict of 1914-15 (in response to early "violation" of freedom of seas by RN)
- The US/Mexican War of 1916-18
- The Continuation War of 1919-21 (Germany refuses to sign versailles)
- The Pacific War of 1922-26 (US/Japan)
- The Rhineland War (France, UK invade Germany following Hitler's occupation of Rhineland.
- The Soviet/Japanese War of 1937-41
- World War 3 -1945-50 (Anti-Hitler alliance breaks up several months before Hitler's defeat with open hostilities between US/UK and USSR in 1945)
- World War 3 - 1952-1958? (Korean War expands to direct war between US/UK-led alliance and USSR/PRC)
- Suez War of 1956-60 - UK/France continue Suez operation as full-scale invasion/occupation of Egypt.
- World War 3 (1961 Berlin crisis erupts into war)
- World War 3 (1962 - Cuban missile crisis goes ballistic )
- Sino-Soviet War of 1970-75
- Hostage War of 1979-80 (US invasion of Iran)
- India-Pakistan War of 2000