Leaders of the Nato military alliance are meeting in Brussels to discuss Russia’s invasion of Ukraine.
They are expected to approve major increases to their forces in eastern Europe.
Nato – the North Atlantic Treaty Organization – is a military alliance formed in 1949 by 12 countries, including the US, Canada, the UK and France.
Its aim was originally to counter the threat of post-war Russian expansion in Europe.
Soviet Russia responded by creating its own military alliance of eastern European communist countries, called the Warsaw Pact.
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