In negotiations with North Korea this week, the Bush administration has for the first time presented the country with specific evidence behind American allegations that North Korea secretly obtained uranium enrichment technology from a founder of Pakistan’s nuclear program, two senior administration officials said. The decision to share the intelligence with North Korean negotiators, the officials said, was part of an effort to convince North Korea that any discussions about disarmament must cover not only the nuclear weapons program it has boasted about, but a second one that it now denies exists.Full Story