Are Call of Duty Black Ops and Modern Warfare in the same universe?

The Black Ops Cold War And Modern Warfare Connection Explained (Story)

Feature: All the Intel You Need on the Reimagined World of Call of Duty®: Modern Warfare® Special Ops.

The Modern Warfare and Black Ops Crossover Explained (Story)

The future world of 'Call of Duty: Black Ops II

Does Call of Duty: Vanguard take place in the same universe as Black Ops and Modern Warfare? - Pro Game Guides

Everything You Need to Know About Call of Duty: Modern Warfare II Campaign Early Access - Xbox Wire

Call of Duty®: Modern Warfare® II Launch — Everything You Need to Know Before the New Era Begins with Campaign Early Access*

All Call of Duty games in release order - Dot Esports

TheGamingRevolution on X: Idk how it would even happen, but Call of Duty needs to somehow contrive a storyline where the Black Ops characters go against the Modern Warfare characters now that

COD] New Call Of Duty Universe Timeline? : r/CallOfDuty