President Barack Obama says U.S. has had problems with cyber intrusions from Russia and other countries in the past. He said the goal of the U.N. was not to duplicate a cycle of escalation akin to other arms races in cyberspace. Obama said he had discussed the topic of cybersecurity norms with Vladimir Putin and earlier with some other countries. The president said he is already seeing some willingness from a lot of countries to adopt the rules, though it will have to be seen whether they are following them.”]