[tacticalturtle]

The head of the organization responsible for the deaths of almost 3000 civilians was known to be present in Afghanistan, and the government refused extradite him.

That seems like a solid casus belli.

[cogman10]

Not to me. The US was justified in killing Osama the way they did, through intelligence gathering and a targeted strike. Occupying the nation for 20 years was completely unjustified.

[foldr]

It isn’t from a legal point of view.