The former head of US intelligence blasted one of the officials who signed the letter casting doubt on Hunter Biden’s laptop - calling him a lying “phony” and igniting a Twitter war over the weekend. The spat erupted Saturday when Richard Grenell, the former Trump-appointed acting director of national intelligence, reacted to a post from John Sipher, who retired from the CIA in 2014, about ethical behavior among public servants. “Didn’t @john_sipher sign a letter 3 weeks before the 2020 elections saying don’t look at Hunter Biden’s laptop because it’s Russian disinformation?” Grenell tweeted Saturday. “Now he’s lecturing people about...