David Cameron: west has not learned lesson of Ukraine and must get tougher

Foreign secretary will say too few states have stepped up to spend on defence, take on Iranian proxies or champion women’s rights

David Cameron is to warn that the west is not learning the lesson of Russia’s invasion of Ukraine, that authoritarian adversaries will only be spurred on if the west shows hesitation or caution.

The foreign secretary will call for the west to be tougher and more assertive and realise it is locked in a battle of wills in which “we all must prove our adversaries wrong – Britain, and our allies and partners around the world”.