A wall of counterintelligence secrecy could stand for decades

Lately, all our political controversies seem to involve a wall.
The government is shut down by the fight over funding for a wall on the southern border, with President Donald Trump and House Speaker Nancy Pelosi dug in for trench warfare. She pulled the plug on his State of the Union address. He canceled her flight to Afghanistan. You can almost hear the 2020 election galloping toward us and the prospects for peace running off into the distance.
But the other wall, which may turn out to be even