Compare Iraq with Ukraine. It’s clear the era of US global supremacy is over | Jonathan Steele

Washington's power is suddenly threatened by a newly confident China and disquiet among leaders in the global south

It's a useful coincidence that the 20th anniversary of George W Bush and Tony Blair's illegal attack on Iraq falls only a matter of weeks after the anniversary of Vladimir Putin's illegal attack on Ukraine. Neither war was authorised by the UN. Both are marked by massive destruction and huge loss of life.

The Bush/Blair invasion and occupation of Iraq, and its chaotic consequences, have taken the lives of more than a million Iraqi civilians, according to one survey. US forces committed innumerable war crimes, not least the torture of captured soldiers. At the Abu Ghraib detention centre near Baghdad, US officers humiliated Iraqi prisoners in violation of the Geneva conventions. The invasion provoked widespread resistance, but US counter-insurgency tactics involved raids on villages that led to massacres of unarmed civilians.