2021 – the year that Joe Biden replaced Donald Trump, took international troops out of Afghanistan, and the Taliban swept back to power.

The final Sitrep of the year examines the key events of the last twelve months, and what they mean for the UK and the world.

Britain’s first carrier strike group deployment in a decade, HMS Defender’s run-in with Russia in the Black Sea, and the defence review that shrinks the Army again but promises new high-tech planes and vehicles in years to come.

So who has had a good year, and who’s had a bad one? And what can the world expect in 2022?