WASHINGTON — Twelve Russian intelligence officers hacked into the Democratic National Committee and the Clinton presidential campaign in the run-up to the 2016 election and released tens of thousands of stolen communications in a brazen effort by a foreign government to meddle in U.S. politics, according to a grand jury indictment announced today.The indictment stands as the clearest Justice Department allegation yet of Russian efforts to interfere, through illegal hacking, in the U.S. presidential election before …