The government’s national security adviser had no involvement in the prosecution being dropped against two British men accused of spying for China, a senior cabinet minister has said. Jonathan Powell had no connection to discussions about the “substance or the evidence” of the case, Bridget Phillipson said on Sunday, adding that Keir Starmer had full confidence in him. Powell’s role has been under intense scrutiny since it emerged that the sudden abandonment of the prosecution in September appeared to be because Starmer’s government was unwilling to say that China posed…