It’s frustrating that British law currently doesn’t criminalise being a covert foreign agent, the UK’s spymaster said on Friday. Ken McCallum, director-general of the Security Service, also known as MI5, said the agency is effectively “operating with one hand behind our back on state threats.” “Laws that had stood the test of time over theft of state secrets are insufficient to deal with the more nuanced interconnected world in which we all live,” the 47-year-old spy chief told the Daily Mail. “We don’t have—in my view—sufficient legal powers to deal with some of what we are now seeing,” he said. “With state threats, we seek to do everything we can to make the UK resilient. But in many cases, we don’t have the ability to bring prosecutions in the criminal courts. For example, it is not presently a criminal offence to be a covert agent of a foreign power.” “It is frustrating,” …