On Monday, hackersSomebody who breaks into computer systems and gets hold of data they are allowed to see. They often then blackmail the group they have stolen data from, and ask for money in return for their data back. broke into the heart of Britain's national security - the Ministry of DefenceIn the UK, the government department in charge of defence. It serves as the British Army HQ. .

The UK governmentThe group of people who govern - or lead - the country. has not yet blamed anyone. But some have started quietly blaming China for the attack.

Chinese leader Xi JinpingThe president of China, who has concentrated power and removed term limits allowing him to serve for life. is currently on a trip to Europe. He is visiting SerbiaA country in south-eastern Europe that gained its independence from the Ottoman Empire in 1878., Hungary and France.

He picked these countries for a reason. All three have criticised the US-led global order. Some say Xi Jinping is looking to pick Western countries apart.

But others say this shows that China today is weak, not strong. China's economyThe way that money flows through a country, which affects wages and the cost of living. relies on selling its goods abroad.

That could lead to conflict with France, which also wants to sell millions of cars to European countries. Some say Xi needs France on his side if the Chinese economy is to do well.

Is the West too weak?

Yes! British defences are clearly not good enough. And the relationship between Britain, the USA and other European countries is no longer as strong as it once was. The West is weak.

No! The USA spends billions of dollars every year on defending itself and its allies. As long as this is true, the West cannot be weak.