Putin acknowledged that Russia’s military budget, which currently stands at 6.3 per cent of GDP, 13.5 trillion rubles ($172 billion), which is unsustainable in the long term.

Russia weighs military spending cuts as NATO targets 5% defence boost! Here’s why

NATO is also written as OTAN. It looks like the letters are reversed for some official reason, but that's not the case. Here is why the official sign carries both the words NATO and OTAN.

Is OTAN NATO written backwards? Not really! Here's why both words are seen on defence bloc's sign

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Top 10 world news: NATO Summit updates; Trump-Zelensky meet, and more

There are approximately 3.55 million active military personnel across all NATO countries, with the United States having the highest number of troops.

How many active troops does each NATO member have? LIST INSIDE as NATO leaders agree to hike military spending

This change, influenced by US President Trump, is split into 3.5 per cent for core defence and 1.5 per cent for broader security investments. Some countries, like Spain, oppose this increase, arguing that their current allocations can meet NATO goals. 

What is NATO’s new 5% defence spending goal and who is against it?