Originally posted by the Voice of America. Voice of America content is produced by the Voice of America, a United States federal government-sponsored entity, and is in the public domain. China Is Biggest Long-Term Threat to Britain, Says UK Spy Chief Jamie Dettmer The head of Britain's domestic spy agency outlined Wednesday a cauldron of threats the country is facing, including from Islamist militancy to rising right-wing extremism, but he emphasized the biggest long-term challenge is presented by China. Russia currently poses the biggest state-based threat to Britain, but China will become more dangerous in the future, Ken McCallum told reporters in London in his first public remarks as the new head of MI5. He said Russia was delivering "bursts of bad weather," while Beijing is "changing the climate." The 45-year-old Glasgow-born spy chief said he's planning to expand his agency's operations to counter clandestine Chinese activities. He warned that Beijing has been seeking to steal the intellectual property of British businesses, including pharmaceutical companies, and universities. "The UK wants to cooperate with China on the big global issues like climate change, while at the same time being robust in confronting covert hostile activity when we come across it," he said. .