My right hon. Friend has made a number of good points. He is, of course, absolutely right: someone who returns can be prosecuted for an offence only if the relevant laws exist. He alluded to new counter-terrorism legislation that is included in the Counter-Terrorism and Border Security Act 2019, and to the “designated areas” offence. I believe that the maximum sentence that can be received for that offence is up to 10 years. It was precisely to try to secure more tools with which to prosecute returning fighters that I made that amendment to that Bill. We are constantly considering what further improvements can be made, and what further tools can be introduced to prosecute returning foreign fighters. I agree with my right hon. Friend that it is time to look at the laws on treason, and to modernise them.