The amount of Russian espionage in the United States dipped after the Soviet collapse in 1991, officials and experts say, but rebounded by 1994 under then-foreign intelligence chief and later Prime Minister Yevgeny Primakov. After the Sept. 11 attacks, Russian President Vladimir Putin ordered a "massive" expansion of intelligence-gathering in Western Europe and North America, Jane's Intelligence Digest reported. Officials and experts say Russian spying has increased significantly under Putin, a former KGB lieutenant colonel. "In 1989 and 1990, after the Berlin Wall fell, we all wanted to light candles and sing 'Kumbaya' and wait for the peace dividends to...